Ferrieu; Gilbert M. M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ferrieu; Gilbert M. M..The latest application filed is for "anti-larsen-effect arrangement in a telephone station equipped with a loudspeaker".
- Ferrieu; Gilbert M. M. - Bievres FR
| Patent | Date |
|---|---|
| Anti-larsen-effect arrangement in a telephone station equipped with a loudspeaker Grant 4,484,034 - Ferrieu , et al. November 20, 1 | 1984-11-20 |
| Hands free telephone with switchable gain in the two speech signal paths Grant 4,454,384 - Ferrieu , et al. June 12, 1 | 1984-06-12 |
| Automatic sound level control of telephone station Grant 4,386,236 - Ferrieu , et al. May 31, 1 | 1983-05-31 |
| Apparatus for detecting the closure of a subscriber's line during ringing Grant 4,356,355 - Ferrieu , et al. October 26, 1 | 1982-10-26 |
| Electronic subscriber junctor Grant 4,356,354 - Ferrieu October 26, 1 | 1982-10-26 |
| Arrangement for processing a delta modulation signal, in particular for decoding these signals Grant 4,225,963 - Ferrieu September 30, 1 | 1980-09-30 |
| Ringing signal generator for use in a subscriber's line circuit Grant 4,174,467 - Ferrieu November 13, 1 | 1979-11-13 |
| Electric network for use in a subscriber's loop Grant 4,135,062 - Ferrieu January 16, 1 | 1979-01-16 |
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