Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6526149 | System and method for reducing non linear electrical distortion in an electroacoustic device | Aleksey S. Khenkin | 2003-02-25 |
| 6091829 | Microphone apparatus | Aleksey S. Khenkin | 2000-07-18 |
| 4706287 | Stereo generator | James H. Townsend, Jr. | 1987-11-10 |
| 4680796 | Sound encoding system | James H. Townsend, Jr. | 1987-07-14 |
| 4589129 | Signal decoding system | James H. Townsend, Jr. | 1986-05-13 |
| 4473793 | Bias generator | David R. Welland | 1984-09-25 |
| 4425551 | Differential amplifier stage having bias compensating means | David R. Welland | 1984-01-10 |
| 4404427 | Audio signal processing system | — | 1983-09-13 |
| 4403199 | Gain control systems | — | 1983-09-06 |
| 4377792 | Compander system | David R. Welland | 1983-03-22 |
| 4220929 | Signal expander | Daniel B. Talbot | 1980-09-02 |
| 4182930 | Detection and monitoring device | — | 1980-01-08 |