Assignee
FREY DOUGLAS R
US·4 granted patents·1 pending application·104 citations·filing 1981–2010
Top patents by PatentIndex Score
5 records- 0195US4495640AAdjustable distortion guitar amplifierFREY DOUGLAS R·Filed 1982·Granted Jan 22, 1985·67 cites·18 claims
- 0265US4823093ADynamically biased voltage controlled elementFREY DOUGLAS R·Filed 1987·Granted Apr 18, 1989·17 cites·6 claims
- 0357US4560947AMonolithic voltage controlled elementFREY DOUGLAS R·Filed 1984·Granted Dec 24, 1985·12 cites·20 claims
- 0450US4471320AVoltage controlled elementFREY DOUGLAS R·Filed 1981·Granted Sep 11, 1984·8 cites·28 claims
- 0539US2012002801A1Subscriber Line Interface Circuitry Line DriverFREY DOUGLAS R·Filed 2010·Application pending·0 cites
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