Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8862553 | Telephone stations with independent backup/restore feature | John W. Soltes, Robert L. Mitchell | 2014-10-14 |
| 7941677 | Apparatus and methods for managing power distribution over Ethernet | — | 2011-05-10 |
| 6081583 | Post call directory entry device and method | Frank Cheng | 2000-06-27 |
| 5838783 | Smart directory management | Frank Cheng, Michael D. Porter | 1998-11-17 |
| 5745562 | Telephone station voice announce device and method | — | 1998-04-28 |
| 5737392 | Two-pass directory entry device and method | Frank Cheng, Michael D. Porter | 1998-04-07 |
| 5717740 | Telephone station account number dialing device and method | Michael D. Porter | 1998-02-10 |
| 5684869 | Telephone station remote access device and method | Nicholas P. Palumbo | 1997-11-04 |