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Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

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  Pays  Date  Score 
      
  • Patent:ES0332804 27.10.1966 Heyer, Arno (P) : UNA MAQUINA DE CALCULAR MECANICA EN MINIATURA. [25.11%]
 
  • Patent:FI26112 10.12.1952 Torell, Sture (P) AB Facit (P) : Anordning vid räknemaskiner och dylikt för utförande av automatisk division [24.85%]
  • Patent:FI558 16.03.1895 Hertzberg, Rafael (P) : Räkneur för utförandet av addition, subtraktion, multiplikation och division samt deras kombinationer [24.59%]
  
  • Patent:GB1003248 02.09.1965 IBM (P) : Improvements in or relating to digital adding circuitry [13.93%]
  • Patent:GB100402 03.08.1916 Arvin, Georg Julius (P) : Calculating Apparatus for use in Schools also Available for Ruling Lines [6.04%]
  • Patent:GB1007425 13.10.1965 Addmaster (P) Corp : Calculating machine [15.33%]
  • Patent:GB101013 18.01.1917 Soc. Chateau Freres (P) et Cie : Improvements in Calculating Machines [6.07%]
  • Patent:GB1029957 18.05.1966 Lloyd, John George (P) und Kitz, Norbert (P) und Drage, James John (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [11.68%]
  • Patent:GB1029958 18.05.1966 Lloyd, John George (P) und Kitz, Norbert (P) und Drage, James John (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [12.22%]
  • Patent:GB1042788 14.09.1966 Lloyd, John George (P) und Kitz, Norbert (P) und Drage, James John (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [14.51%]
  • Patent:GB1042789 14.09.1966 Lloyd, John George (P) und Kitz, Norbert (P) und Drage, James John (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [14.88%]
  • Patent:GB1048699 16.11.1966 Thevis, Paul (P) Olympia (P) Werke AG : Printing mechanism for calculating, accounting and like machines [14.53%]
  • Patent:GB1059791 22.02.1967 Rona Janos Snecma : Pneumatic or hydraulic adding circuit [15.07%]
  • Patent:GB1091168 15.11.1967 Monroe (P) International Corp. : Division control means [25.64%]
  • Patent:GB1105694 13.03.1968 Computron Corp : Calculating machine [16.48%]
  • Patent:GB1121511 31.07.1968 Texaco Development Corp : Analog calculator [14.85%]
  • Patent:GB112416 28.02.1918 Nicole Paul : Improvements in Calculating Apparatus [10.58%]
  • Patent:GB1131329 23.10.1968 Dorey, Frederick Charles (P) British Airports Authority : Calculator for use in computing charges made by time [5.41%]
  • Patent:GB113791 20.05.1920 Siemens (P) und Halske AG : Improvements in or relating to Means for Checking Workmens Time. [5.77%]
  • Patent:GB115029 11.04.1918 Blaustein, Joseph (P) : Improvements in Calculating Machines [3.06%]
  • Patent:GB117982 15.08.1918 Crawford, Edward Newton (P) : Improvements in and relating to Computing Yard Measures. [9.59%]
  • Patent:GB120985 02.12.1918 Allaun, Charles (P) : A Device or Calculator for Multiplying, Dividing, Adding and Subtracting Integers [20.56%]
  • Patent:GB122900 06.02.1919 Cox, Charles Henry Farley (P) : Improvements in or relating to Slide Rule for Finding the Value of Goods sold by Weight or Measure [10.15%]
  • Patent:GB129291 04.10.1920 Odhner, Valentin Jakob (P) : Improvements in or relating to Revolutions-counting Mechanism for Calculating Machines of the Pin-wheel and Cam-disk Type [6.11%]
  • Patent:GB131109 11.08.1919 Wade, Harold (P) : Improvements in or relating to Adding Machines [5.49%]
  • Patent:GB136093 11.12.1919 Watkins Alfred : Improvements in Graduated Scales and Index or other Sliding Reading [22.60%]
  • Patent:GB143884 28.05.1919 Trinks, Franz (P) : Multiplying and Dividing Apparatus [8.38%]
  • Patent:GB146792 10.04.1919 Mays, James Francis (P) : Improvements in calculating apparatus for performing the operation of division [26.95%]
  • Patent:GB147306 23.04.1919 Smith, A.E.; Bloodworth, F.J.; Adams, A. Smith & Co. E. : Tabular Calculators [13.38%]
  • Patent:GB147751 07.07.1915 Schaller, Carl (P) : Multiplying and Dividing Apparatus [13.90%]
  • Patent:GB147766 07.07.1921 Trinks, Franz (P) : Multiplying and Dividing Apparatus, Zeroizing Mechanism [14.62%]
  • Patent:GB149935 06.04.1920 Kemmerich, Otto (P) : Apparatus for assisting the addition of long columns of figures [13.69%]
  • Patent:GB150351 25.08.1921 Mang, Gerard (P) & Fournier, Louis (P) : Calculator [15.19%]
  • Patent:GB155379 20.12.1920 John MacGillivray : Improvements in calculating instruments [5.83%]
  • Patent:GB166486 11.07.1921 Rauchwetter, Franz (P) : Division mechanism for calculating machines [25.64%]
  • Patent:GB167699 16.01.1920 Darnley, Percey Henry (P) and Richards, Barnett (P) : Teaching arithmetic.-A device for facilitating the learning of multiplication and division [24.88%]
  • Patent:GB174369 21.12.1922 Daemen, Victor (P) : Improvements in logarithmic computing apparatus [22.56%]
  • Patent:GB177796 07.06.1923 Antoine Isidore Odier : Improvements in and relating to calculating machines [11.45%]
  • Patent:GB183723 03.01.1922 King, Otis (P) : Improvements in and relating to Calculating Apparatus [14.46%]
  • Patent:GB187236 02.08.1923 Alphonse Hippolyte Claeys : Improvements in and relating to squares provided with scales for any kind of calculations [12.28%]
  • Patent:GB189503937 04.01.1896 Eagles, James (P) : An Improved Cylindrical Slide Rule [6.20%]
  • Patent:GB189510583 05.10.1895 Norris, Thaddeus (P) : Improvements in Slide Rules [9.40%]
  • Patent:GB189915527 02.06.1900 Goudie, William John (P) Goudie William John : Improvements in Calculating Rules and the like [6.22%]
  • Patent:GB190005142 22.12.1900 Dohm, Wilhelm (P) : An Improved Calculating Apparatus for Ascertaining the Section of Beams, Girders, Columns, and the like [15.51%]
  • Patent:GB190104011 23.11.1901 Pantsar Keicke : Improvements in Mechanical Adding and Calculating Apparatus [11.07%]
  • Patent:GB190112590 07.09.1901 Trinks, Franz (P) : Improvements in Calculating Machines [12.73%]
  • Patent:GB190218562 18.06.1903 Collins, Norman (P) : An Improved Calculator [6.38%]
  • Patent:GB190314330 19.11.1903 Müller, Arthur, Zeising, Otto (P) : Calculating Machine [15.77%]
  • Patent:GB190319870 18.08.1904 Kelling, Kurt (P) : Improvements in Repetition Means for Calculating Machines [16.15%]
  • Patent:GB190327472 17.11.1904 Cloud, Otho Edmund (P) : Improvements in Calculating and Registering Machines [14.49%]
  • Patent:GB190402172 03.03.1904 Vermehren, Johannes (P) : Improvements in Calculating Machines [8.30%]
  • Patent:GB190417291 15.06.1905 Troeger, Karl Emil (P) : Slide-rule [23.08%]
  • Patent:GB190502610 01.02.1906 Davis, Henry (P) und Smith, John William (P) : Wages and Premium Calculator [14.69%]
  • Patent:GB190623173 19.09.1907 Salcher, Alois (P) : Improvements in and relating to a Calculating Machine [14.58%]
  • Patent:GB190705779 10.10.1907 Dreyfus, Armand Albert Abraham (P) und Levy, Alfred Henry Victor (P) : A New or Improved Calculating Machine [11.34%]
  • Patent:GB190706272 19.09.1907 Schmoelcke, Julius (P) : Improvements in and relating to Adding Devices [7.40%]
  • Patent:GB190723343 22.10.1908 Riedl, Camillo (P) : An Improved Calculating Machine [14.41%]
  • Patent:GB190727269 09.10.1908 Putnam, George Bowers (P) : Improvements in or relating to Adding Machines [15.19%]
  • Patent:GB190727358 10.12.1908 Prosser, Harry Reginald (P) : Improved Calculating Apparatus [5.62%]
  • Patent:GB190727446 06.08.1908 Bollinger, Alexander (P) und Landry, Alcide (P) und Landry, Eugen (P) : Improvements in or relating to Calculating Machines [16.85%]
  • Patent:GB190820467 27.05.1909 Giuliani, Vittore (P) : Improved Calculating Machine [15.01%]
  • Patent:GB190822435 18.02.1909 Trinks, Franz (P) : Improvements in Calculating Machines [15.37%]
  • Patent:GB190822620 03.06.1909 Leder, Ernst (P) : A Logarithmic Disc Calculating Machine [14.24%]
  • Patent:GB190908984 14.04.1910 Layton, Edwin James (P) : Improvements in or relating to Calculating Machines [9.94%]
  • Patent:GB190921023 03.03.1910 Jahnz, Erwin (P) : Improvements in and connected with Calculating Machines [16.09%]
  • Patent:GB190930600 23.06.1910 Bechtolsheim, Max (P) : An Improvement in Calculating Apparatus [7.56%]
  • Patent:GB191015101 27.04.1911 Cox, Edward Lomax (P) : A New and Improved Commercial Calculator [12.62%]
  • Patent:GB191022445 03.08.1911 Gray Henry : Apparatus for Facilitating the Multiplication and Division of Whole Numbers and Decimals. [24.38%]
  • Patent:GB191125313 14.11.1912 Pivoda, Franz (P) : Device for Calculating the Interest of a Principal [14.82%]
  • Patent:GB191210855 28.11.1912 Kerr David Smith : Improvements in Date Calculating Devices [10.35%]
  • Patent:GB191219506 20.02.1913 Matjeka, Otto Rudolf (P) : Improvements relating to Calculating Machines [6.25%]
  • Patent:GB191307731 27.11.1913 Trinks, Franz (P) : A Setting Mechanism for Calculating Machines [15.03%]
  • Patent:GB191310753 28.08.1913 Faber-Castell (P) : Improvements in and relating to Slide Rule Frames [7.01%]
  • Patent:GB191311575 19.05.1914 Breuer, Heinrich (P) : Calculating-apparatus [15.87%]
  • Patent:GB191317890 05.08.1913 Montessori, Maria (P) : Abacuses [9.60%]
  • Patent:GB191401326 29.07.1915 Rasmussen, Carl (P) : Improvements in and relating to Calculating Machines [14.00%]
  • Patent:GB191401782 10.06.1915 Pivoda, Franz (P) : Improvements in Calculating-apparatus for Determining Date Intervals [15.95%]
  • Patent:GB191404880 15.07.1915 Trinks, Franz (P) : Improvements in and relating to Calculating Machines [16.30%]
  • Patent:GB191504131 16.03.1916 Wade, Harold (P) : Improvements in or relating to Calculating Machines [14.25%]
  • Patent:GB191512793 07.09.1916 Harvey, Charles James (P) : Improvements in Devices for Calculating Percentages and the like [12.12%]
  • Patent:GB191513759 08.06.1916 Coddington, Fitzherbert John; Livens, George Henry : Improvements in Proportional Calculators [8.16%]
  • Patent:GB191516876 19.10.1916 Scurfield, George Gouthwaite : Improvements in and relating to Apparatus for or Means of Measuring the Depth of Colour of Various Substances whether Liquid or Solid. [5.45%]
  • Patent:GB195286 29.03.1923 Albert John Anido : Improvements in and connected with Slide Rules and the like [10.19%]
  • Patent:GB201168 17.07.1923 Kübler, Carl Addiator (P) : Improvements in Adding and Subtracting Appatus [3.55%]
  • Patent:GB2035640 18.06.1980 Craig, G (P) : Instructional device of the slide rule type [5.46%]
  • Patent:GB207694 06.12.1923 George Willis Grey : Improvements in or relating to calculating slide rules [7.58%]
  • Patent:GB211089 07.02.1924 Odhner, Valentin Jakob (P) : Improvements in transfer mechanisms for calculating machines [10.04%]
  • Patent:GB214142 17.04.1924 Lyadoff, Peter (P) : Improvements in or relating to calculating apparatus [3.90%]
  • Patent:GB2148564 30.05.1985 Duce Herbert John : Logarithmic calculating appliance [6.55%]
  • Patent:GB224549 07.04.1926 Bernhard Weiner : Improvements in and relating to calculating machines [5.88%]
  • Patent:GB240206 01.10.1925 Wilfred Ernest Jones : Improved calculating device for the use of printers [5.87%]
  • Patent:GB246134 15.01.1925 Bergmann, Jean (P) : Improvements in Calculating Devices. [19.44%]
  • Patent:GB248620 11.03.1926 Francesco Poggi und Umberto Emanuele : Improvements in or relating to calculating devices [6.15%]
  • Patent:GB253249 17.06.1926 Hugo John Buchanan Wollaston : Apparatus for calculating and scale drawing [14.23%]
  • Patent:GB257931 31.08.1926 Quijano, J. (P) : Multiplying and dividing apparatus [25.92%]
  • Patent:GB276094 25.08.1927 Thomas, Clifford Woodman (P) : A new or improved device for calculating weights and quantities in the manufacture of textile fabrics [9.19%]
  • Patent:GB280204 09.02.1928 Paul Jellinek und Fritz Beer : An improved apparatus for calculating and measuring purposes [14.30%]
  • Patent:GB290181 01.11.1928 Jean Ansermot : Apparatus for measuring surfaces [6.30%]
  • Patent:GB292333 21.06.1928 Lewis, William Blomfield (P) : Improvements in or relating to calculating devices for facilitating the setting out or centering of type-written or similar matter [5.79%]
  • Patent:GB303483 03.07.1930 Siemens (P) : Improvements in or relating to calculating machines [15.45%]
  • Patent:GB307254 07.03.1929 Frederick Arnold : Apparatus for measuring distances on charts [14.98%]
  • Patent:GB308768 22.05.1930 Marcel Jacob : Improvements in or relating to record controlled calculating machines [14.13%]
  • Patent:GB311414 03.04.1930 Denis Maurice Tissier : Calculators for use in betting [6.66%]
  • Patent:GB314609 04.07.1929 Michael Ewgenjewitchem Podtjag : Cylindrical slide rule [11.87%]
  • Patent:GB318150 26.06.1930 Fernand, Joseph Bourgeois (P) : Toy slide rule [17.94%]
  • Patent:GB328171 24.04.1930 Tauschek, Gustav (P) : Calculating machines [26.29%]
  • Patent:GB328455 01.05.1930 Harald, Odegaarden (P) : Improvements in or relating to calculating devices [6.56%]
  • Patent:GB337487 06.11.1930 Godfrey, Thomas Garwood (P) : An improved logarithmic calculator of the cylindrical type [18.45%]
  • Patent:GB343323 19.02.1931 Hugo Jung : Improvements in and relating to beads or counters for abacuses [6.41%]
  • Patent:GB358212 08.10.1931 Eric Cross : Improvements in or relating to calculating devices [5.67%]
  • Patent:GB363470 06.11.1929 Avery, Harold (P) Marchant (P) : Calculating Machines [24.37%]
  • Patent:GB364298 07.01.1932 Henry Osborne Brierly : Improvements in Slide Rules [9.37%]
  • Patent:GB381613 13.10.1932 David John Waghorn : Improvements in navigational plotting instruments [6.19%]
  • Patent:GB382589 27.10.1932 Montres Zenith Fab Des : A calculating device for the record diagrams of apparatus recording periods of operation of machines or vehicles [5.53%]
  • Patent:GB389524 20.03.1933 Rawlin Richard Maconchy Malloc : Improvements in and relating to calculating machines [15.57%]
  • Patent:GB431623 27.12.1934 Facit (P) : Improvements in Multiplying Machines [15.45%]
  • Patent:GB450599 18.12.1934 Marchant (P) : Calculating Machine [14.82%]
  • Patent:GB454249 28.09.1936 Campbell, Charles (P) British Tabulating (P) Mach Co Ltd : Improvements in or relating to calculating machines [14.31%]
  • Patent:GB458800 28.12.1936 British Tabulating (P) Mach Co Ltd : Improvements in or relating to calculating machines for performing division [24.46%]
  • Patent:GB458834 28.12.1936 British Tabulating (P) Mach Co Ltd : Improvements in or relating to record controlled calculating machines [14.90%]
  • Patent:GB460856 05.02.1937 Georges Baer : Improvements in calculating devices [13.70%]
  • Patent:GB469510 27.07.1937 Robert Miller, Cyril Beverley : Apparatus for scoring games [5.76%]
  • Patent:GB484852 11.05.1938 Walter Henry Edridge : Improvements in and relating to combined logarithmic calculating and linear measurement scales or scales having equi-distant graduations [6.65%]
  • Patent:GB497039 12.12.1938 British Tabulating (P) Mach Co Ltd : Improvements in or relating to calculating machines for performing division [30.51%]
  • Patent:GB497676 23.12.1938 British Tabulating (P) Mach Co Ltd : Improvements in or relating to record-card controlled calculating machines [14.03%]
  • Patent:GB498999 17.01.1939 Tassilo Von Keler Praecisions Mechanische Und Op : Improvements in or relating to multiplying apparatus [13.84%]
  • Patent:GB500237 06.02.1939 Sidney Reginald Lucas : Improvements in or relating to slide rule calculators [9.55%]
  • Patent:GB525397 27.08.1940 Standard Telephones Cables Ltd : Improvements in or relating to electrically-operated calculating equipment [14.92%]
  • Patent:GB525398 27.08.1940 Standard Telephones Cables Ltd : Improvements in or relating to electrical calculating apparatus [15.09%]
  • Patent:GB532109 17.01.1941 British Tabulating (P) Mach Co Ltd : Improvements in or relating to calculating machines [25.84%]
  • Patent:GB551311 09.06.1941 Facit (P) : Calculating machines [15.11%]
  • Patent:GB567915 08.03.1945 John Donald MacLean : Improvements in Slide Rules and other calculators [5.95%]
  • Patent:GB571270 14.08.1945 Standard Telephones Cables Ltd : Electrical calculating apparatus [13.97%]
  • Patent:GB575100 30.11.1942 Facit (P) : Calculating machines [28.84%]
  • Patent:GB577195 08.05.1946 British Tabulating (P) Mach Co Ltd : Improvements in or relating to calculating machines [16.77%]
  • Patent:GB582052 30.05.1944 Facit (P) : Calculating - apparatus [14.84%]
  • Patent:GB585936 28.02.1947 Mahmoud El Shishini Marconi Wireless Telegraph Co, : An improved electrical device for effecting the multiplication or [14.24%]
  • Patent:GB586215 11.03.1947 Robert Lansdown, Edward John Walter : Improvements in or relating to Slide Rules [10.80%]
  • Patent:GB587220 17.04.1947 Lancelot Hogben : Apparatus for the use in the teaching of arithmetic operations [5.77%]
  • Patent:GB591680 26.08.1947 Baker, George Thomas (P) Automatic Telephone and Elect : Improvements in or relating to electrically operated calculating equipment [13.78%]
  • Patent:GB598407 18.02.1948 Lionel Skinner : A device for indicating the number of hours worked by a person [9.93%]
  • Patent:GB601375 23.07.1943 Felt und Tarrant (P) : Improvements in or Relating to Calculating Machines [29.47%]
  • Patent:GB632330 21.11.1949 Edward Ernest Keegan : A toy calculating device [10.29%]
  • Patent:GB662767 12.12.1951 British Tabulating (P) Mach Co Ltd : Improvements in and relating to calculating machines [13.70%]
  • Patent:GB667706 05.03.1952 : educational Device for teaching multiplication and division [17.72%]
  • Patent:GB669986 09.04.1952 British Tabulating (P) Mach Co Ltd : Improvements in and relating to calculating machines for performing division [30.35%]
  • Patent:GB693445 30.04.1951 Broido, Daniel (P) : Calculating Machines [14.61%]
  • Patent:GB698748 21.10.1953 Theodorus Reumerman und Willem Hendrik Theodorus Helmi : Improvements in or relating to checking devices for calculating apparatus [14.44%]
  • Patent:GB703178 27.01.1954 Emile Leon Gabriel Torcheux, Etienne Augustin Henri : Electric analogue calculator utilising quadripolar networks [13.86%]
  • Patent:GB712749 28.07.1954 Turck, Joseph Abraham Valentine (P) Felt und Tarrant (P) : Improvements in or relating to calculating machines [5.41%]
  • Patent:GB716656 13.10.1954 Brunsviga (P) Maschinenwerke AG : Improvements in or relating to ten-key adding machines [14.89%]
  • Patent:GB717432 27.10.1954 Altenburger, Ernst (P), Hirt, Otto (P), Westinger, Karl (P) : Calculating machine for the four arithmetical operations (addition, subtraction, multiplication and division) [14.82%]
  • Patent:GB743826 25.01.1956 Kenneth Lowson : Improvements in or relating to slide rule cursors [24.67%]
  • Patent:GB749134 16.05.1956 Etablissements Japy Freres : Improvements relating to Adding Machines Adapted for Multiplication and Division [23.98%]
  • Patent:GB760883 07.11.1956 Atvidaberg Facit (P) Ab : Improvements in calculating machines [14.53%]
  • Patent:GB780431 31.07.1957 British Tabulating (P) Mach Co Ltd : Improvements in or relating to electronic calculating apparatus [14.30%]
  • Patent:GB781295 14.08.1957 IBM (P) : Improvements in calculating machines [14.19%]
  • Patent:GB787069 27.11.1957 Hall, George Virgil (P) Oliwa, Walter Stanley (P) Monroe (P) Calculating Machine Comp. : Improvements relating to sign detection mechanism for calculating machine registers [14.19%]
  • Patent:GB789854 29.01.1958 AB Åtvidaberg Facit (P) : Improvements in calculating machines with automatic division [23.33%]
  • Patent:GB819641 09.09.1959 Duke, Keith Albert (P) Int Computers and Tabulators Ltd : Improvements in or relating to calculating apparatus [14.95%]
  • Patent:GB819879 09.09.1959 AB Åtvidaberg Facit (P) : Improvements in calculating machines with automatic division [23.33%]
  • Patent:GB851003 12.10.1960 Harold Alexandre Babbington Bl : Improvements in or relating to calculating instruments of the slide-rule or like type for making calculations relating to speed, time and dis [6.15%]
  • Patent:GB852182 26.10.1960 Gerhard Dirks : Cyclically operable electrical calculating apparatus [14.74%]
  • Patent:GB868759 25.05.1961 Kitz, Norbert (P) und Milburn, Robert (P) und Webb, Christopher Frederick (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [25.60%]
  • Patent:GB881480 01.11.1961 Leslie Alfred Muirhead : Calculating apparatus to carry out arithmetical calculations [14.29%]
  • Patent:GB897786 30.05.1962 Inst za Ratsionalisatsia : Improved calculating instrument [17.37%]
  • Patent:GB912872 19.01.1961 Pickett and Eckel (P) : Improvements in Slide Rules [5.78%]
  • Patent:GB914330 02.01.1963 Philips Electrical Ind Ltd : Improvements in or relating to decimal-point indicators for calculating machines [14.63%]
  • Patent:GB925161 01.05.1963 Kitz, Norbert (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [24.83%]
  • Patent:GB925163 01.05.1963 Kitz, Norbert (P) Bell Punch (P) Co Ltd : Improvements in or relating to calculating machines [6.88%]
  • Patent:GB929557 26.06.1963 Telefunken (P) Patent : A calculating system [14.62%]
  • Patent:GB935584 28.08.1963 Sidney Lidderdale Scarlett Armstrong Cork Company Ltd : Improvements in or relating to Slide Rules [10.40%]
  • Patent:GB942219 20.11.1963 Clark, Gordon Albert (P) Mullard Ltd : Improvements in or relating to digital electrical calculating apparatus [14.25%]
  • Patent:GB951789 11.03.1964 Reusch, Werner (P) und Voigt, Fritz (P) Elektronische Rechenmasch Ind : Hydraulic binary adder [14.98%]
  • Patent:GB957101 06.05.1964 Rca Corp : Binary half adder [14.36%]
  • Patent:GB958083 13.05.1964 Walther (P) Büromaschinen GmbH : Improvements in or relating to calculating machines [23.01%]

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