Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5826187 | Integrated cordless telephone with telephone answering device and method of replaying messages through a handset thereof | Kenneth R. Core, Stephen B. Knuth, Mark J. Karnowski | 1998-10-20 |
| 5699421 | Telephone answering device with low cost dual tone multi-frequency detector | Mark J. Karnowski, Frank Sacca | 1997-12-16 |