Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5343516 | Computer telecommunications signalling interface | David Callele | 1994-08-30 |
| 5117452 | Telephone interface for a computer for receiving and transmitting information during the silent interval between ringing | David Callele | 1992-05-26 |