Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856050 | Telephone message retrieval system with improved message processor and retrieval console including auto-disabling playback switch | Peter F. Theis | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856050 | Telephone message retrieval system with improved message processor and retrieval console including auto-disabling playback switch | Peter F. Theis | 1989-08-08 |