Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6259444 | User-definable interactive system | Douglas L. Palmer | 2001-07-10 |
| 5960065 | Two-line telephone controller with hold feature | Gregory F. Beck, Douglas L. Palmer, James Albert Fontana | 1999-09-28 |
| 5802150 | Communication control board with audio functions | Gregory F. Beck | 1998-09-01 |
| 5515423 | Two-line telephone controller | Gregory F. Beck, Douglas L. Palmer, James Albert Fontana, Alistair Egan, Lisa Walker | 1996-05-07 |