Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6650732 | Telephony testing system | John M. Benedict, Bradford R. Holmes | 2003-11-18 |
| 6453015 | Telephony testing system | John M. Benedict, Bradford R. Holmes | 2002-09-17 |
| 6320939 | Remote telephony testing device | Gregory M. Nulty | 2001-11-20 |
| 4777644 | Method and apparatus for testing telephone coin relays | Donald J. Butterworth | 1988-10-11 |
| 4760379 | Fail-safe high temperature alarm | Edward J. De Phillipo | 1988-07-26 |