Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6272220 | Electronically switched optically coupled line interface | — | 2001-08-07 |
| 6192125 | Optical coupling circuit for a data access arrangement (DAA) | John A. Norsworthy | 2001-02-20 |
| RE36443 | Dialer with internal option select circuit programmed with externally hardwired address | Herman Ma, David N. Larson | 1999-12-14 |