Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8763484 | Breakaway drive system | Richard H. Yinko, JR. | 2014-07-01 |
| 5222129 | Telephone charging signalling detector suitable for central office line interface circuits | Andre Bonvallet, Michel Canonne | 1993-06-22 |
| 5218635 | Low-frequency alternating current signal detector, in particular for central office line interface circuits | Andre Bonvallet, Daniel Perrein | 1993-06-08 |
| 5177735 | Private telephone installation architecture | Raymond Blaszykowski, Andre Bonvallet | 1993-01-05 |
| 5125027 | Central office line interface circuit for an analog network private telephone installation | Raymond Blaszykowski, Andre Bonvallet | 1992-06-23 |
| 4739254 | Voltage measuring device of a high voltage metalclad installation | Georges Henry, Jean Kieffer | 1988-04-19 |