Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699421 | Telephone answering device with low cost dual tone multi-frequency detector | Alex Nirshberg, Mark J. Karnowski | 1997-12-16 |
| 5692042 | Speakerphone controlled by a comparator with hysteresis | — | 1997-11-25 |
| 5686891 | System for locating an object | Marcus Escobosa | 1997-11-11 |
| 5680075 | Digital automatic gain control | — | 1997-10-21 |
| 5638050 | System for locating an object | Marcus Escobosa | 1997-06-10 |