Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663727 | Frequency response analyzer and shaping apparatus and digital hearing enhancement apparatus and method utilizing the same | — | 1997-09-02 |
| 4989219 | Midlevel carrier modulation and demodulation techniques | Richard C. Gerdes | 1991-01-29 |
| 4680633 | Circuit and method for producing accurate dc restored video waveform, horizontal sync pulses, and vertical sync pulses | Richard C. Gerdes | 1987-07-14 |
| 4613974 | Method and system for modulating a carrier signal | Richard C. Gerdes | 1986-09-23 |