Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847896 | Monolithically integratable telephone circuit for supplying ringing signals to a subscriber's telephone line and for detecting an off the hook condition during ringing | Marco Siligoni, Vanni Saviotti | 1989-07-11 |
| 4355206 | Ringing control device | Renato Israel, Jean-Claude Marchand | 1982-10-19 |