This compilation Copyright (C) 2005 Mike Sebastian. No copyright claim is made to original U.S. Government works.
| U.S. Patent No. | Assignee | File Date | Issue Date | Inventor1 | Product | Title | Comments |
| 3946210 | Veeder Industries, Inc. | March 21, 1975 | March 23, 1976 | Fleischer | (not a calculator) | Resettable electronic counter employing a calculator chip | Uses National Semiconductor MM5736 calculator chip as event counter |
| 3976867 | RCA Corp. | December 10, 1975 | August 24, 1976 | Campbell | (not a calculator) | Calculator timer with simple base-6 correction | Uses National Semiconductor MM5736 calculator chip in timer |
| 4000972 | Hemotec, Inc. | January 16, 1976 | January 4, 1977 | Braun | (not a calculator) | Measuring system for the pharmacological manipulation of the coagulation mechanism in blood and for the elapsed coagulation time | Uses MOS Technology Inc. MPS2523-002 calculator chip |
| 4025774 | American Hospital Supply Corp. | June 16, 1975 | May 24, 1977 | Johnson | (not a calculator) | Timing apparatus including electronic calculator circuits | Uses National Semiconductor MM5736 calculator chip |
| 4027146 | Heath Co. | March 23, 1976 | May 31, 1977 | Gilmore | (not a calculator) | High speed accurate low frequency counter | Uses Texas Instruments TMS0116 calculator chip |
| 4031373 | (none) | June 1, 1976 | June 21, 1977 | Beckwith | - | Velocity computing chronograph | Digital chronograph uses Cal-Tex CT5001 chip |
| 4033188 | Rischer & Porter Co. | May 30, 1975 | July 5, 1977 | Herzl | (not a calculator) | Linear vortex-type flowmeter | Uses non-specific standard calculator chip |
| 4039805 | The Measuregraph Co. | March 27, 1975 | August 2, 1977 | Newell | (not a calculator) | Apparatus for calculating the price of measured lengths of material | Uses Texas Instruments TMS0117 calculator chip |
| 4050295 | (none) | September 12, 1975 | September 27, 1977 | Harvey | - | Digital measuring system for engine fuel performance | Fuel consumption measurement device utilizes calculator chip |
| 4068307 | David Floyd | May 6, 1976 | January 10, 1978 | Floyd | (not a calculator) | Mile post location display system | Uses Texas Instruments TMS1802 calculator chip |
| 4079237 | Unit Process Assemblies, Inc. | November 12, 1975 | March 14, 1978 | Schlesinger | (not a calculator) | Card controlled beta backscatter thickness measuring instrument | Uses General Instruments C-500 calculator chip |
| 4092599 | (none) | November 26, 1976 | May 30, 1978 | Yee | (not a calculator) | Annunciator communication system | Uses National Semiconductor MM5736 calculator chip |
| 4097143 | Microfilm Service Corp | December 13, 1976 | June 27, 1978 | Buchanan | (not a calculator) | Step-and-repeat camera | Uses National Semiconductor MM5739 or MM5736 calculator chip |
| 4103332 | David Floyd | June 20, 1977 | June 25, 1978 | Floyd | (not a calculator) | Mile post location display system | Uses Texas Instruments TMS1802 calculator chip |
| 4130754 | Cortex Research Corp. | June 16, 1977 | December 19, 1978 | Fosslien | (not a calculator) | Particle counting | Uses National Semiconductor MM5736 calculator chip |
| 4136955 | Kern & Co. AG | September 2, 1975 | January 30, 1979 | Aeschlimann | (not a calculator) | Apparatus for correcting theodolites | Uses National Semiconductor MM5760 and MM5765 calculator chips |
| 4140897 | (none) | October 25, 1977 | February 20, 1979 | Guerra | (not a calculator) | Electronic digital sequential counters | Uses Texas Instruments TMS0972 for event counter |
| 4168525 | (none) | November 29, 1977 | September 18, 1979 | Russell | (not a calculator) | Universal timer | Uses National Semiconductor MM5736, MM5784, MM5781, or MM5791 calculator chips |
| 4176397 | (none) | December 23, 1977 | November 27, 1979 | Crom | (not a calculator) | Electrical odometer | Uses Mostek MK50321 or Rockwell A5901CA calculator chip |
| 4179656 | Burlington Industries, Inc. | February 6, 1978 | December 18, 1979 | Wagner | - | Determination of average speed rotation of a cyclically loaded shaft during periods of up to two minutes duration | Electronic tachometer using a CT5002 chip |
| 4180726 | (none) | February 1, 1978 | December 25, 1979 | Decrescent | - | System for measuring characteristics of a object's motion | Velocity measurement device uses calculator chip to, for example, predict distance of golf ball flight |
| 4202211 | NP Industries, Inc. | January 12, 1979 | May 13, 1980 | Perry | - | Flow measuring system | Uses National Semiconductor MM57109 chip |
| 4217777 | NP Industries, Inc. | January 12, 1979 | August 19, 1980 | Newman | - | Flow measuring system | Uses National Semiconductor MM57109 chip |
| 4223182 | (none) | December 4, 1978 | September 16, 1980 | Peters | - | Telephone controlled order entry system | Uses CT5001 to buffer and display/print numbers as part of a system that records telephone keypad number entries |
| 4258809 | Mangood Corp. | July 31, 1974 | March 31, 1981 | Jones | (not a calculator) | Apparatus and methods for weighing railroad cars coupled together and in motion | Uses Texas Instruments TMS0117 calculator chip |
| 4283712 | (none) | December 22, 1976 | August 11, 1981 | Goody | (not a calculator) | Portable exercise totalizer | Uses National Semiconductor MM5736 calculator chip |
| 4314371 | (none) | August 17, 1979 | February 2, 1982 | Covington | (not a calculator) | Digital radio communications system with high noise immunity | Uses National Semiconductor MM5777 calculator chip |
| 4435712 | RCA Corp. | August 13, 1981 | March 6, 1984 | Kipp | - | FM-CW radar ranging system with signal drift compensation | Can use TMS1017 or TMS1018 |
| 4447123 | Ensco, Inc. | July 29, 1981 | May 8, 1984 | Page | (not a calculator) | Fiber optic security system including a fiber optic seal and an electronic verifier | Uses National Semiconductor MM5738 and MM5765 calculator chips |
| 4700301 | (none) | March 6, 1986 | October 13, 1987 | Dyke | (not a calculator) | Method of automatically steering agricultural type vehicles | Uses National Semiconductor MM57109 chip |
| 4763291 | Project Benjamin, Ltd. | March 6, 1986 | August 9, 1988 | Schwaber | (not a calculator) | Remote display device for a microcomputer | Uses National Semiconductor MM5777 calculator chip |
| 4814996 | Futures Technology, Ltd. | June 10, 1982 | March 21, 1989 | Wang | - | Portable energy cost calculation | Energy consumption meter utilizes calculator chip |
| RE33229 | C.L.I.C. Electronics International, Inc. | March 6, 1986 | June 5, 1990 | Schwaber | (not a calculator) | Remote display device for a microcomputer with optical communication | Uses National Semiconductor MM5777 calculator chip |
Last updated November 5, 2006
