Robert Girard

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Colombes, FR

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Patents Grantslast 30 patents

Information Patent Grant
Telephone charging signalling detector suitable for central office...
- Patent number 5,222,129
- Issue date Jun 22, 1993
- Alcatel Business Systems
- Andre Bonvallet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Low-frequency alternating current signal detector, in particular fo...
- Patent number 5,218,635
- Issue date Jun 8, 1993
- Alcatel Business Systems
- Andre Bonvallet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Private telephone installation architecture
- Patent number 5,177,735
- Issue date Jan 5, 1993
- Alcatel Business Systems
- Raymond Blaszykowski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Central office line interface circuit for an analog network private...
- Patent number 5,125,027
- Issue date Jun 23, 1992
- Alcatel Business Systems
- Raymond Blaszykowski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE