Emmanuel Lefort

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L'Hay-les-Roses, FR

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Patents Grantslast 30 patents

Information Patent Grant
Acoustic feedback cancelling electro-acoustic transducer network
- Patent number 4,485,272
- Issue date Nov 27, 1984
- Telecommunications Radioelectriques et Telephoniques T.R.T.
- Tuan K. Duong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Anti-larsen-effect arrangement in a telephone station equipped with...
- Patent number 4,484,034
- Issue date Nov 20, 1984
- Telecommunications Radioelectrique et Telephoniques
- Gilbert M. M. Ferrieu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic sound level control of telephone station
- Patent number 4,386,236
- Issue date May 31, 1983
- Telecommunications Radioelectriques et Telephoniques T.R.T.
- Gilbert M. M. Ferrieu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Balancing amplifier
- Patent number 4,296,383
- Issue date Oct 20, 1981
- Telecommunications Radioelectriques et Telephoniques T.R.T.
- Jean-Louis Jeandot
- H03 - BASIC ELECTRONIC CIRCUITRY