Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853958 | LPC-based DTMF receiver for secondary signalling | Rafi Rabipour, Michael G. Beyrouti | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853958 | LPC-based DTMF receiver for secondary signalling | Rafi Rabipour, Michael G. Beyrouti | 1989-08-01 |