Inventor · disambiguated record
Donald R. Hagen
Also filed as: HAGEN DONALD · HAGEN DONALD R
4 granted patents·1 pending application·69 citations·filing 1980–2016
77Inventor score
Top patents by PatentIndex Score
5 records- 0156US4329676APotentiometerRESISTANCE TECHNOLOGY INC·Filed 1980·Granted May 11, 1982·25 cites·46 claims
- 0254US5500901AFrequency response adjusting deviceRESISTANCE TECHNOLOGY INC·Filed 1994·Granted Mar 19, 1996·33 cites·10 claims
- 0341US5157371APotentiometer retention mechanism and method of mountingRESISTANCE TECHNOLOGY INC·Filed 1991·Granted Oct 20, 1992·8 cites·6 claims
- 0436US2017057731A1Disposable glove dispensing systemCAMPBELL JEFFREY ALAN·Filed 2016·Application pending·0 cites
- 0531US4636768ACompression connection for potentiometer leadsRESISTANCE TECHNOLOGY INC·Filed 1985·Granted Jan 13, 1987·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →