Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6873702 | Telephone subscriber system | Walter Rossi, Ferdinando Lari, Carlo Antonini, Luigi Vergani | 2005-03-29 |
| 6560333 | MOS transistors substitute circuit having a transformer/data interface function, particularly for ISDN networks and corresponding control and driving switch configuration | Ferdinando Lari, Carlo Antonini | 2003-05-06 |
| 5818923 | System and method for supressing pulse dialing feedback occurring particularly with auxiliary acoustic ringers in socket telephone systems | Carlo Antonini | 1998-10-06 |
| 5809134 | Telephone interface circuit with impedance termination during call pauses | Carlo Antonini | 1998-09-15 |
| 5734287 | Control of distortion in a line-powered amplifier with a rail-to-rail output voltage swing | Carlo Antonini | 1998-03-31 |
| 5602914 | Device for limiting the working voltage for mechanical switches in telephony | Antonio Andreini, Pietro Erratico, Enrico M. A. Ravanelli | 1997-02-11 |
| 5525832 | Substrate insulation device | Pietro Erratico | 1996-06-11 |
| 5461670 | Telephone subscriber system incorporating a drive interface for a telephone line switch at a different reference potential | Carlo Antonini, Gianpietro Vanalli | 1995-10-24 |
| 5459783 | Acoustic feedback suppression device particulary for auxiliary ringers in plug-in telephone systems | Carlo Antonini | 1995-10-17 |
| 5448636 | Device for limiting the working voltage mechanical switches in telephony | Antonio Andreini, Pietro Erratico, Enrico M. A. Ravanelli | 1995-09-05 |
| 4756022 | Integrated circuit for the transmission of telephone signals | Marco Siligoni | 1988-07-05 |
| 4647839 | High precision voltage-to-current converter, particularly for low supply voltages | Marco Siligoni | 1987-03-03 |
| 4502016 | Final bridge stage for a receiver audio amplifier | Marco Siligoni | 1985-02-26 |