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Die große Enzyklopädie des mechanischen Rechnens

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Patente aus den USA 1955

Revision as of 18:31, 15. Oct 2004 Revision as of 18:39, 15. Oct 2004
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-<tr><td>[[Patent:US1049128]]</td><td>01.01.1955</td><td>[[Weimershaus, Alfred]]</td><td>[[DeTeWe]]</td><td>zu [DE975081]</td></tr> 
-<tr><td>[[Patent:US1066767]]</td><td>01.01.1955</td><td>[[Plathen, Jürgen von]], [[Schroeter, Wolfgang]], [[Menge, Eberhard]]</td><td>[[Olympia]]</td><td>Einrichtung zur Bestimmung des Dezimalkommas an Rechenmaschine mit dekadisch verschiebbaren Schaltwerk (16 E ? )</td></tr> 
-<tr><td>[[Patent:US1073277]]</td><td>01.01.1955</td><td>[[Leich, Karl]], [[Menge, Eberhard]]</td><td>[[Olympia]]</td><td>Rückübertragungs-Einrichtung an 10 Tasten Rechenmaschinen</td></tr> 
-<tr><td>[[Patent:US1076408]]</td><td>01.01.1955</td><td>[[Elbstösser, Erich]], [[Reichlin, Karl]]</td><td>[[Siemag]]</td><td>Kontakteinrichtung an einer durch eine Rechenmaschine gesteuerte Schreibmaschine</td></tr> 
-<tr><td>[[Patent:US1094023]]</td><td>01.01.1955</td><td>[[Götz, Wilhelm]]</td><td>[[Thales]]</td><td>Einrichtung zur schrittweisen Stellenverschiebung eines [[Zählwerk]]wertes mittels Zwischenspeicherwerk (Thales KR)</td></tr> 
-<tr><td>[[Patent:US1096651]]</td><td>01.01.1955</td><td>[[Gelling, Helmut]]</td><td>[[Walther]]</td><td>Klinkenschaltwerk ([[Walther 640]])</td></tr> 
-<tr><td>[[Patent:US1104231]]</td><td>01.01.1955</td><td>[[Richter,Alfred]]</td><td>[[Triumphator]]</td><td>Schaltsperre für Rechenwerk-[[Schlitten]]</td></tr> 
-<tr><td>[[Patent:US1116927]]</td><td>01.01.1955</td><td>[[Gelling, Helmut]]</td><td>[[Walther]]</td><td>Umdrehungszählwerk</td></tr> 
-<tr><td>[[Patent:US1122304]]</td><td>01.01.1955</td><td>[[Jülich, Werner]]</td><td>[[Precisa]]</td><td>Automatische Kommadruckeinrichtung</td></tr> 
-<tr><td>[[Patent:US1137579]]</td><td>01.01.1955</td><td>[[Herman Gang, Herman]]</td><td>[[Monroe]]</td><td>Faktorspeichereinrichtung für Rechenmaschine mit geteilten [[Staffelwalze]]n</td></tr> 
<tr><td>[[Patent:US2698715]]</td><td>04.01.1955</td><td>[[Spurlino, P.]] et al</td><td></td><td>Machine Release Mechanism</td></tr> <tr><td>[[Patent:US2698715]]</td><td>04.01.1955</td><td>[[Spurlino, P.]] et al</td><td></td><td>Machine Release Mechanism</td></tr>
-<tr><td>[[Patent:US304772]]</td><td>31.01.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US309226]]</td><td>31.01.1955</td><td>[[Brüning, Paul]]</td><td></td><td>Zehnerschaltvorrichtung an Zahlenrollen von Rechenmaschinen</td></tr> 
<tr><td>[[Patent:US2700823]]</td><td>01.02.1955</td><td>[[Martin, W. F.]] et al</td><td></td><td>Chart Calculator</td></tr> <tr><td>[[Patent:US2700823]]</td><td>01.02.1955</td><td>[[Martin, W. F.]] et al</td><td></td><td>Chart Calculator</td></tr>
<tr><td>[[Patent:US2701687]]</td><td>08.02.1955</td><td>[[Boos, W. J.]]</td><td></td><td>Slide Rule</td></tr> <tr><td>[[Patent:US2701687]]</td><td>08.02.1955</td><td>[[Boos, W. J.]]</td><td></td><td>Slide Rule</td></tr>
<tr><td>[[Patent:US2702159]]</td><td>15.02.1955</td><td>[[Reppert, R. V.]]</td><td>none</td><td>Decimal Point Mechanism</td></tr> <tr><td>[[Patent:US2702159]]</td><td>15.02.1955</td><td>[[Reppert, R. V.]]</td><td>none</td><td>Decimal Point Mechanism</td></tr>
-<tr><td>[[Patent:US305161]]</td><td>15.02.1955</td><td></td><td></td><td>Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2702668]]</td><td>22.02.1955</td><td>[[Dustin, H. M.]]</td><td>[[Marchant]]</td><td>Decimal Aligning Mechanism</td></tr> <tr><td>[[Patent:US2702668]]</td><td>22.02.1955</td><td>[[Dustin, H. M.]]</td><td>[[Marchant]]</td><td>Decimal Aligning Mechanism</td></tr>
-<tr><td>[[Patent:US305456]]</td><td>28.02.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
-<tr><td>[[Patent:US305458]]</td><td>28.02.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Rechenmaschine mit Druckwerk.</td></tr> 
-<tr><td>[[Patent:US305459]]</td><td>28.02.1955</td><td>[[Eichler, Ulrich]]</td><td></td><td>Motorisch angetriebene Vierspecies-Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2703677]]</td><td>08.03.1955</td><td>[[Harnwell, G. P.]]</td><td></td><td>Vector Calculating Rule</td></tr> <tr><td>[[Patent:US2703677]]</td><td>08.03.1955</td><td>[[Harnwell, G. P.]]</td><td></td><td>Vector Calculating Rule</td></tr>
-<tr><td>[[Patent:US305761]]</td><td>15.03.1955</td><td>[[Hecht, Ferdinand]]</td><td></td><td>Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US305762]]</td><td>15.03.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US305764]]</td><td>15.03.1955</td><td></td><td></td><td>Machine à calculer.</td></tr> 
-<tr><td>[[Patent:US305765]]</td><td>15.03.1955</td><td></td><td></td><td>Machine à calculer.</td></tr> 
-<tr><td>[[Patent:US305766]]</td><td>15.03.1955</td><td></td><td></td><td>Machine à calculer munie dun clavier réduit.</td></tr> 
<tr><td>[[Patent:US2705109]]</td><td>29.03.1955</td><td>[[Campos, F.]]</td><td>Logabax</td><td>Calculating Machine Key-Board and Differential Actuators</td></tr> <tr><td>[[Patent:US2705109]]</td><td>29.03.1955</td><td>[[Campos, F.]]</td><td>Logabax</td><td>Calculating Machine Key-Board and Differential Actuators</td></tr>
<tr><td>[[Patent:US2706082]]</td><td>12.04.1955</td><td>[[Lydfors, J.]]</td><td>none</td><td>Multiplier Control Mechanism for Short Cut Multiplication</td></tr> <tr><td>[[Patent:US2706082]]</td><td>12.04.1955</td><td>[[Lydfors, J.]]</td><td>none</td><td>Multiplier Control Mechanism for Short Cut Multiplication</td></tr>
-<tr><td>[[Patent:US306412]]</td><td>15.04.1955</td><td></td><td>[[Underwood]]</td><td>Machine à calculer.</td></tr> 
<tr><td>[[Patent:US2707077]]</td><td>26.04.1955</td><td>[[Wise, E. L.]]</td><td>[[Underwood]]</td><td>Ten-Key Indexing System</td></tr> <tr><td>[[Patent:US2707077]]</td><td>26.04.1955</td><td>[[Wise, E. L.]]</td><td>[[Underwood]]</td><td>Ten-Key Indexing System</td></tr>
-<tr><td>[[Patent:US773099]]</td><td>29.04.1955</td><td>[[Lehre, Otto]]</td><td>[[Sterling]]</td><td>Calculating-apparatus ([[Sterling Dial-A-Matic]])</td></tr> 
-<tr><td>[[Patent:US306683]]</td><td>30.04.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
<tr><td>[[Patent:US2707592]]</td><td>03.05.1955</td><td>[[Rice, W. C.]]</td><td></td><td>Pocket Calculator for the Calculation of Calories</td></tr> <tr><td>[[Patent:US2707592]]</td><td>03.05.1955</td><td>[[Rice, W. C.]]</td><td></td><td>Pocket Calculator for the Calculation of Calories</td></tr>
-<tr><td>[[Patent:US307038]]</td><td>15.05.1955</td><td></td><td></td><td>Machine à calculer.</td></tr> 
-<tr><td>[[Patent:US307039]]</td><td>15.05.1955</td><td>[[Herzstark, Curt]]</td><td></td><td>Rundbau-Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2708797]]</td><td>24.05.1955</td><td>[[Hamer, E. F.]]</td><td></td><td>Counting Frame</td></tr> <tr><td>[[Patent:US2708797]]</td><td>24.05.1955</td><td>[[Hamer, E. F.]]</td><td></td><td>Counting Frame</td></tr>
-<tr><td>[[Patent:US307373]]</td><td>31.05.1955</td><td>[[Ruppli, Eugen]]</td><td></td><td>Rechenvorrichtung an einer Bureaumaschine.</td></tr> 
-<tr><td>[[Patent:US307375]]</td><td>31.05.1955</td><td></td><td></td><td>Machine à calculer.</td></tr> 
<tr><td>[[Patent:US2710141]]</td><td>07.06.1955</td><td>[[Avery, Harold T.]]</td><td>[[Marchant]]</td><td>Dividend-Divisor Aligning Mechanism</td></tr> <tr><td>[[Patent:US2710141]]</td><td>07.06.1955</td><td>[[Avery, Harold T.]]</td><td>[[Marchant]]</td><td>Dividend-Divisor Aligning Mechanism</td></tr>
<tr><td>[[Patent:US2710143]]</td><td>07.06.1955</td><td>[[Hoch, F. W.]]</td><td></td><td>Slide-Rule</td></tr> <tr><td>[[Patent:US2710143]]</td><td>07.06.1955</td><td>[[Hoch, F. W.]]</td><td></td><td>Slide-Rule</td></tr>
<tr><td>[[Patent:US2710405]]</td><td>07.06.1955</td><td>[[Lundquist, I.]]</td><td>[[Monroe]]</td><td>Carriage Cushioning Means for Calculating Machines</td></tr> <tr><td>[[Patent:US2710405]]</td><td>07.06.1955</td><td>[[Lundquist, I.]]</td><td>[[Monroe]]</td><td>Carriage Cushioning Means for Calculating Machines</td></tr>
-<tr><td>[[Patent:US307673]]</td><td>15.06.1955</td><td>[[Eichler, Ulrich]]</td><td></td><td>Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US307677]]</td><td>15.06.1955</td><td></td><td></td><td>Dispositif dinsertion de virgules dune machine à calculer.</td></tr> 
-<tr><td>[[Patent:US308019]]</td><td>30.06.1955</td><td></td><td>[[Bell Punch]]</td><td>Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2713458]]</td><td>19.07.1955</td><td>[[West, E. J.]] et al</td><td></td><td>Speed-Averaging Device</td></tr> <tr><td>[[Patent:US2713458]]</td><td>19.07.1955</td><td>[[West, E. J.]] et al</td><td></td><td>Speed-Averaging Device</td></tr>
-<tr><td>[[Patent:US308598]]</td><td>31.07.1955</td><td></td><td></td><td>Verfahren zum Übertragen einer aufgespeicherten Information von einem Teil einer programmgesteuerten digitalen Rechenmaschine auf einen andern Teil derselben und Übertragungseinrichtung an einer programmgesteuerten elektronischen Rechenmaschine zur Durchf</td></tr> 
<tr><td>[[Patent:US2714254]]</td><td>02.08.1955</td><td>[[Andrews, S. W. C.]] et al</td><td></td><td>Device for Effecting Controlled Variations of Geometrical Forms and other Shapes</td></tr> <tr><td>[[Patent:US2714254]]</td><td>02.08.1955</td><td>[[Andrews, S. W. C.]] et al</td><td></td><td>Device for Effecting Controlled Variations of Geometrical Forms and other Shapes</td></tr>
<tr><td>[[Patent:US2714985]]</td><td>09.08.1955</td><td>[[Saxby, F. R.]] et al</td><td>[[NCR]]</td><td>Electromagnetically Operated Totalizer Control Mechanism for Accounting Machines</td></tr> <tr><td>[[Patent:US2714985]]</td><td>09.08.1955</td><td>[[Saxby, F. R.]] et al</td><td>[[NCR]]</td><td>Electromagnetically Operated Totalizer Control Mechanism for Accounting Machines</td></tr>
Line 55: Line -1:
<tr><td>[[Patent:US2714989]]</td><td>09.08.1955</td><td>[[Ellerbeck, G. C.]]</td><td>[[Friden]]</td><td>Calculating Machine</td></tr> <tr><td>[[Patent:US2714989]]</td><td>09.08.1955</td><td>[[Ellerbeck, G. C.]]</td><td>[[Friden]]</td><td>Calculating Machine</td></tr>
<tr><td>[[Patent:US2714991]]</td><td>09.08.1955</td><td>[[Hopkins, G. W.]]</td><td>[[Monroe]]</td><td>Sign Control Mechanism for Duplex Registers</td></tr> <tr><td>[[Patent:US2714991]]</td><td>09.08.1955</td><td>[[Hopkins, G. W.]]</td><td>[[Monroe]]</td><td>Sign Control Mechanism for Duplex Registers</td></tr>
-<tr><td>[[Patent:US308931]]</td><td>15.08.1955</td><td></td><td>[[Bell Punch]]</td><td>Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2715779]]</td><td>23.08.1955</td><td>[[Hughson, D. R.]]</td><td></td><td>Machinists Calculator</td></tr> <tr><td>[[Patent:US2715779]]</td><td>23.08.1955</td><td>[[Hughson, D. R.]]</td><td></td><td>Machinists Calculator</td></tr>
<tr><td>[[Patent:USD175399]]</td><td>23.08.1955</td><td>J. F. Fleming</td><td></td><td>Combined Adding Machine and Pencil Box</td></tr> <tr><td>[[Patent:USD175399]]</td><td>23.08.1955</td><td>J. F. Fleming</td><td></td><td>Combined Adding Machine and Pencil Box</td></tr>
<tr><td>[[Patent:US2717121]]</td><td>06.09.1955</td><td>[[Luhn, H. P.]]</td><td>[[IBM]]</td><td>Keyboard</td></tr> <tr><td>[[Patent:US2717121]]</td><td>06.09.1955</td><td>[[Luhn, H. P.]]</td><td>[[IBM]]</td><td>Keyboard</td></tr>
-<tr><td>[[Patent:US309618]]</td><td>15.09.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Einrichtung an einer Rechenmaschine mit Stellstuecktraeger.</td></tr> 
<tr><td>[[Patent:US2718357]]</td><td>20.09.1955</td><td>[[Sandor, A.]]</td><td>none</td><td>Logarithmic Calculator</td></tr> <tr><td>[[Patent:US2718357]]</td><td>20.09.1955</td><td>[[Sandor, A.]]</td><td>none</td><td>Logarithmic Calculator</td></tr>
-<tr><td>[[Patent:US309957]]</td><td>30.09.1955</td><td></td><td></td><td>Machine à calculer.</td></tr> 
-<tr><td>[[Patent:US309958]]</td><td>30.09.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
-<tr><td>[[Patent:US309959]]</td><td>30.09.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
<tr><td>[[Patent:US2719359]]</td><td>04.10.1955</td><td>[[Webber, W. D.]]</td><td></td><td>Protractor</td></tr> <tr><td>[[Patent:US2719359]]</td><td>04.10.1955</td><td>[[Webber, W. D.]]</td><td></td><td>Protractor</td></tr>
<tr><td>[[Patent:US2719669]]</td><td>04.10.1955</td><td>[[Schroeder, C. S.]]</td><td></td><td>Printing Scale</td></tr> <tr><td>[[Patent:US2719669]]</td><td>04.10.1955</td><td>[[Schroeder, C. S.]]</td><td></td><td>Printing Scale</td></tr>
Line 69: Line -1:
<tr><td>[[Patent:US2721697]]</td><td>25.10.1955</td><td>[[Gilpin, J. C.]]</td><td>none</td><td>Eelectromagnetic Drive Means for Computing Machines</td></tr> <tr><td>[[Patent:US2721697]]</td><td>25.10.1955</td><td>[[Gilpin, J. C.]]</td><td>none</td><td>Eelectromagnetic Drive Means for Computing Machines</td></tr>
<tr><td>[[Patent:US2721698]]</td><td>25.10.1955</td><td>[[Gang, Herman]]</td><td>[[Monroe]]</td><td>Tabulation Control Means</td></tr> <tr><td>[[Patent:US2721698]]</td><td>25.10.1955</td><td>[[Gang, Herman]]</td><td>[[Monroe]]</td><td>Tabulation Control Means</td></tr>
-<tr><td>[[Patent:US310543]]</td><td>31.10.1955</td><td></td><td></td><td>Programmgesteuerte digitale elektronische Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US310545]]</td><td>31.10.1955</td><td>[[Muggli, Caesar]]</td><td></td><td>Automatische Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US310546]]</td><td>31.10.1955</td><td>[[Muggli, Caesar]]</td><td></td><td>Automatische Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2722376]]</td><td>01.11.1955</td><td>[[Ellerbeck, G. C.]]</td><td>[[Friden]]</td><td>Back Transfer Calculating Machine</td></tr> <tr><td>[[Patent:US2722376]]</td><td>01.11.1955</td><td>[[Ellerbeck, G. C.]]</td><td>[[Friden]]</td><td>Back Transfer Calculating Machine</td></tr>
<tr><td>[[Patent:US2722377]]</td><td>01.11.1955</td><td>[[Davis, E. A.]]</td><td>[[Friden]]</td><td>Dividend Divisor Aligning Mechanism</td></tr> <tr><td>[[Patent:US2722377]]</td><td>01.11.1955</td><td>[[Davis, E. A.]]</td><td>[[Friden]]</td><td>Dividend Divisor Aligning Mechanism</td></tr>
<tr><td>[[Patent:US2724062]]</td><td>15.11.1955</td><td>[[Nolde, G. V.]]</td><td>[[Marchant]]</td><td>Electrical Circuit for Suppressing Interference</td></tr> <tr><td>[[Patent:US2724062]]</td><td>15.11.1955</td><td>[[Nolde, G. V.]]</td><td>[[Marchant]]</td><td>Electrical Circuit for Suppressing Interference</td></tr>
-<tr><td>[[Patent:US310868]]</td><td>15.11.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
<tr><td>[[Patent:US2724552]]</td><td>22.11.1955</td><td>[[Sherwood, A. W.]]</td><td></td><td>Gas Mileage Computer</td></tr> <tr><td>[[Patent:US2724552]]</td><td>22.11.1955</td><td>[[Sherwood, A. W.]]</td><td></td><td>Gas Mileage Computer</td></tr>
-<tr><td>[[Patent:US740826]]</td><td>23.11.1955</td><td>[[Fuller, John Rodney Dyson]]</td><td>[[Bristol Aeroplane]] Co Ltd</td><td>Improvements in or relating to [[Planimeter]]s and like mechanical integrating apparatus</td></tr> 
<tr><td>[[Patent:US2725194]]</td><td>29.11.1955</td><td>[[Krauss, D. G.]]</td><td></td><td>Fuel Milleage Calculator</td></tr> <tr><td>[[Patent:US2725194]]</td><td>29.11.1955</td><td>[[Krauss, D. G.]]</td><td></td><td>Fuel Milleage Calculator</td></tr>
-<tr><td>[[Patent:US311277]]</td><td>30.11.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Zehntasten-Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US311278]]</td><td>30.11.1955</td><td></td><td></td><td>Appareil à calculer.</td></tr> 
<tr><td>[[Patent:US2726809]]</td><td>13.12.1955</td><td>[[Farber, M.]]</td><td></td><td>Moments of Distribution Determining Device</td></tr> <tr><td>[[Patent:US2726809]]</td><td>13.12.1955</td><td>[[Farber, M.]]</td><td></td><td>Moments of Distribution Determining Device</td></tr>
-<tr><td>[[Patent:US311846]]</td><td>15.12.1955</td><td></td><td></td><td>Automatische Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US311847]]</td><td>15.12.1955</td><td></td><td></td><td>Digitale elektronische Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US311849]]</td><td>15.12.1955</td><td></td><td>[[Friden]]</td><td>Rechenmaschine.</td></tr> 
-<tr><td>[[Patent:US311850]]</td><td>15.12.1955</td><td></td><td>[[Telephonwerke und Kabelindustrie]]</td><td>Vierspezies-Rechenmaschine.</td></tr> 
<tr><td>[[Patent:US2727688]]</td><td>20.12.1955</td><td>[[Luhn, H. P.]]</td><td>[[IBM]]</td><td>Keyboard Control Mechanism</td></tr> <tr><td>[[Patent:US2727688]]</td><td>20.12.1955</td><td>[[Luhn, H. P.]]</td><td>[[IBM]]</td><td>Keyboard Control Mechanism</td></tr>
<tr><td>[[Patent:US2727689]]</td><td>20.12.1955</td><td>[[Heindorff, H.]]</td><td>[[Brunsviga]]</td><td>Ten Digit Keyboard for Calculating Machine</td></tr> <tr><td>[[Patent:US2727689]]</td><td>20.12.1955</td><td>[[Heindorff, H.]]</td><td>[[Brunsviga]]</td><td>Ten Digit Keyboard for Calculating Machine</td></tr>
<tr><td>[[Patent:US2728526]]</td><td>27.12.1955</td><td>[[Fowler, R. G.]] et al</td><td>[[NCR]]</td><td>Power Drive Mechanism</td></tr> <tr><td>[[Patent:US2728526]]</td><td>27.12.1955</td><td>[[Fowler, R. G.]] et al</td><td>[[NCR]]</td><td>Power Drive Mechanism</td></tr>
-<tr><td>[[Patent:US312267]]</td><td>31.12.1955</td><td></td><td></td><td>Machine à calculer électronique</td></tr> 
-<tr><td>[[Patent:US312268]]</td><td>31.12.1955</td><td></td><td></td><td>Dispositif de multiplication dune machine à calculer électronique purement numérique.</td></tr> 
</table> </table>
</div> </div>

Revision as of 18:39, 15. Oct 2004

Patent:US269871504.01.1955Spurlino, P. et alMachine Release Mechanism
Patent:US270082301.02.1955Martin, W. F. et alChart Calculator
Patent:US270168708.02.1955Boos, W. J.Slide Rule
Patent:US270215915.02.1955Reppert, R. V.noneDecimal Point Mechanism
Patent:US270266822.02.1955Dustin, H. M.MarchantDecimal Aligning Mechanism
Patent:US270367708.03.1955Harnwell, G. P.Vector Calculating Rule
Patent:US270510929.03.1955Campos, F.LogabaxCalculating Machine Key-Board and Differential Actuators
Patent:US270608212.04.1955Lydfors, J.noneMultiplier Control Mechanism for Short Cut Multiplication
Patent:US270707726.04.1955Wise, E. L.UnderwoodTen-Key Indexing System
Patent:US270759203.05.1955Rice, W. C.Pocket Calculator for the Calculation of Calories
Patent:US270879724.05.1955Hamer, E. F.Counting Frame
Patent:US271014107.06.1955Avery, Harold T.MarchantDividend-Divisor Aligning Mechanism
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