Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6909381 | Aircraft collision avoidance system | — | 2005-06-21 |
| 5625893 | Satellite communications system with receiver distortion correction which is controlled by up-link transmission equipment | — | 1997-04-29 |
| 5394274 | Anti-copy system utilizing audible and inaudible protection signals | — | 1995-02-28 |
| 5023909 | Multi-system AM stereo receiver having preferred mode of operation | — | 1991-06-11 |
| RE33381 | Multiple system AM stereo receiver and pilot signal detector | — | 1990-10-09 |
| 4896371 | Synchronous AM transmission system having reduced self interference effects | — | 1990-01-23 |
| 4850020 | Asymmetrical sideband AM stereo transmission | — | 1989-07-18 |
| 4819268 | Transmitter having means for controlling undesired out-of-band radiation | — | 1989-04-04 |
| 4811422 | Reduction of undesired harmonic components | — | 1989-03-07 |
| 4769842 | Asymmetrical sideband transmission with pseudo-stereo effects | — | 1988-09-06 |
| 4747141 | AM stereo signal decoder | — | 1988-05-24 |
| 4688255 | Compatible AM broadcast/data transmisison system | — | 1987-08-18 |
| 4653095 | AM stereo receivers having platform motion protection | — | 1987-03-24 |
| 4641341 | Automatic multi-system AM stereo receiver using existing single-system AM stereo decoder IC | — | 1987-02-03 |
| 4569073 | Asymmetrical sideband transmission | — | 1986-02-04 |
| 4521906 | Speaker systems for producing balanced stereo images at multiple locations | — | 1985-06-04 |
| 4479153 | Squelch and message storage system and method | — | 1984-10-23 |
| 4433312 | Method and means for modulating waves | — | 1984-02-21 |
| 4426728 | Multiple system AM stereo receiver and pilot signal detector | — | 1984-01-17 |
| 4424593 | Suppressed carrier communications system | — | 1984-01-03 |
| 4373115 | Predictive distortion reduction in AM stereo transmitters | — | 1983-02-08 |
| 4358738 | Signal presence determination method for use in a contaminated medium | — | 1982-11-09 |
| 4311877 | Method and means for improving the reliability of systems that transmit relatively wideband signals over two or more relatively narrowband transmission circuits | — | 1982-01-19 |
| 4295106 | Method and means for introducing additional asymmetry into audio waves | — | 1981-10-13 |
| 4227052 | Method and means for reducing false alarm rates in security systems | — | 1980-10-07 |