Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5815582 | Active plus selective headset | David Claybaugh, Ralph Busch, John E. Hohman | 1998-09-29 |
| 5699436 | Hands free noise canceling headset | David Claybaugh | 1997-12-16 |
| 5563817 | Adaptive canceller filter module | Eldon W. Ziegler, Jr., Paul Friedlander | 1996-10-08 |
| 5546467 | Active noise attenuated DSP Unit | — | 1996-08-13 |
| 5537551 | Data compression method for use in a computerized informational and transactional network | Edward D. Weinberger, Michael L. Gordon | 1996-07-16 |
| 5526432 | Ducted axial fan | — | 1996-06-11 |
| 5440642 | Analog noise cancellation system using digital optimizing of variable parameters | Randy V. Sabett | 1995-08-08 |
| 5375174 | Remote siren headset | — | 1994-12-20 |
| 5311453 | Variable point sampling | Roy H. Scott | 1994-05-10 |
| 4620286 | Probabilistic learning element | Allen R. Smith, Chuan-Chieh Tan, Thomas B. Slack | 1986-10-28 |
| 4599692 | Probabilistic learning element employing context drive searching | Chuan-Chieh Tan, Thomas B. Slack | 1986-07-08 |
| 4599693 | Probabilistic learning system | — | 1986-07-08 |
| 4593367 | Probabilistic learning element | Thomas B. Slack | 1986-06-03 |
| 4201889 | Distributed control digital switching system | Alan J. Lawrence, John M. Cotton, Kenneth J. Hamer-Hodges | 1980-05-06 |
| 4201890 | Multiport digital switching element | Alan J. Lawrence, Murray Rubinstein, Daniel C. Upp | 1980-05-06 |
| 4201891 | Expandable digital switching network | Alan J. Lawrence, John M. Cotton | 1980-05-06 |