Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636595 | Non-KSU message delivery system | — | 2003-10-21 |
| 5826187 | Integrated cordless telephone with telephone answering device and method of replaying messages through a handset thereof | Alex Nirshberg, Stephen B. Knuth, Mark J. Karnowski | 1998-10-20 |
| 5432844 | Shared line answering system with enhanced extension device features | Mark J. Karnowski, Stephen B. Knuth | 1995-07-11 |
| 5418839 | Environmental adaptive mechanism for channel utilization in cordless telephones | Stephen B. Knuth, Oded Yossifor | 1995-05-23 |
| 5392332 | Shared line telephone answering system with a telephone line-powered disconnect module | Mark J. Karnowski, Stephen B. Knuth | 1995-02-21 |
| 5197093 | Enviromental adaptive mechanism for channel utilization in cordless telephones | Stephen B. Knuth, Oded Yossifor | 1993-03-23 |