Inventor · disambiguated record
Bruno Defretin
Also filed as: DEFRETIN BRUNO
4 granted patents·55 citations·filing 1985–1993
76Inventor score
Top patents by PatentIndex Score
4 records- 0157US4709388ASubscriber telephone line interface circuit with reduced power stand-by modeTHOMSON CSF·Filed 1986·Granted Nov 24, 1987·19 cites·2 claims
- 0254US5420919ATelephone line current modulatorSGS THOMSON MICROELECTRONICS·Filed 1993·Granted May 30, 1995·25 cites·10 claims
- 0339US4894862ASignal compression circuit, particularly for a telephone setSGS THOMSON MICROELECTRONICS·Filed 1988·Granted Jan 16, 1990·6 cites·9 claims
- 0434US4750203ASubscriber telephone set with amplified loudspeaker reception with reduction of gain in the case of an insufficient power supplyTHOMSON CSF·Filed 1985·Granted Jun 7, 1988·5 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →