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...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 4729125 | On-line serial communication interface to a transmitter from a current loop A serial communication interface establishes communication to the microprocessor of a transmitter, from a current loop which is powered by a power supply. The microprocessor outputs an analog signal corresponding to a process variable and also can receive... | 03/01/1988 |
| 4729126 | Method and apparatus for supervising the accessing and testing of communication systems An apparatus for accessing and testing communication systems and for controlling said accessing and testing. A microprocessor operates under software control to perform various supervisory and computational functions. Communications components permit the ... | 03/01/1988 |
| 4729127 | Method and system for compression and reconstruction of cultural data for use in a digital moving map display A method and digital system for the compression and reconstruction of culal data for use with display systems, such as a system for producing a real time moving map display of terrain, provides a modified footprint/common boundary technique for data comp... | 03/01/1988 |
| 4729128 | Personal identification card system A method and apparatus for a personal identification card system includes a card having a plurality of lamina joined permanently together, with identification information written on the inner surfaces of the lamina. The information is not visible from the... | 03/01/1988 |
| 4729129 | VSWR protection circuit apparatus A VSWR protection circuit employs first and second mixers whereby the first mixer receives at one input the transmitted frequency and has a local oscillator coupled to the other input to provide at its output a difference frequency. This difference freque... | 03/01/1988 |
