Denis Abraham

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Vanves, FR

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Patents Grantslast 30 patents

Information Patent Grant
Piezo-electric speaker capsule for telephone handset
- Patent number 5,953,414
- Issue date Sep 14, 1999
- Alcatel
- Denis Abraham
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone handset with transducer assembly
- Patent number 5,231,659
- Issue date Jul 27, 1993
- Alcatel Business Systems
- Denis Abraham
- H04 - ELECTRIC COMMUNICATION TECHNIQUE