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Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

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Brevetti  Stati Uniti  1977

 
  • Patent:US4001551 04.01.1977 Paul A. Hirsimaki : Calculator
  • Patent:US4002097 11.01.1977 Leonard, Verna M. (8701 N. Highway 41, Fresno, CA 93727) : Chord progression selector
  • Patent:US4006344 01.02.1977 Schutte, George (P) : Mechanical binary number adding and subtracting apparatus
  • Patent:US4009370 22.02.1977 Otsuka, Kouichi (Chiba, JA) : Counting or indicating ring device
  • Patent:US4010546 08.03.1977 Ching-Tien, Pi : Ellipse drawing instrument
  • Patent:US4011987 15.03.1977 Frank L. Cheek : Aircraft descent profile calculator
  • Patent:US4014101 29.03.1977 Mizukawa, Suehiro : Ellipse drawing instrument
  • Patent:US4024641 24.05.1977 Chudner, Joseph : Instrument for drawing geometric figures
  • Patent:US4026463 31.05.1977 Betzler, Hermann (Homburg, Saar, DT) : Circular slide rule suitable for use in determining the electrolyte deficiency in infusion therapy
  • Patent:US4028529 07.06.1977 Van De Weghe, George (P) : Currency exchange calculator
  • Patent:US4032754 28.06.1977 Ageton, Roy R. (Conrad, IA 50621) : Global time system
  • Patent:US4035616 12.07.1977 Fritz Artur Piringer : Device for the joint evaluation of several cyclic processes
  • Patent:US4037084 19.07.1977 Ali A. Seireg Amr M. S. Baz Wisconsin Alumni Research Foundation : Decompression plan calculator
  • Patent:US4037518 26.07.1977 Felix Hector Garcia Lorenzen : Musical chord and note calculator
  • Patent:US4037782 26.07.1977 Jackson, William Nelson (St. Louis, MO) : Engine condition calculating device
  • Patent:US4039819 02.08.1977 Vorrasi Michael : Combined Writing Instrument And Slide Rule
  • Patent:US4045875 06.09.1977 Cortez, Raul Chajon : Ellipsograph drafting apparatus
  • Patent:US4048477 13.09.1977 Hungerford, Daniel Comstock (P.O. Box 14306, North Palm : Weight control calculator
  • Patent:US4048724 20.09.1977 Keuver, Paul H. : Ellipsograph
  • Patent:US4048731 20.09.1977 Baguioro, Anastasia : Educational game apparatus

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