Inventor · disambiguated record
Harold H. Cheffer
Also filed as: CHEFFER HAROLD H
5 granted patents·135 citations·filing 1983–1988
83Inventor score
Files withNCR CO5
Top patents by PatentIndex Score
5 records- 0180US4780805ALow/high input voltage power supplyNCR CO·Filed 1988·Granted Oct 25, 1988·51 cites·9 claims
- 0275US4516035APhase synchronization and control circuitNCR CO·Filed 1983·Granted May 7, 1985·34 cites·9 claims
- 0373US4484084APower MOSFET transfer switchNCR CO·Filed 1983·Granted Nov 20, 1984·28 cites·13 claims
- 0461US4517470AHigh frequency inverterNCR CO·Filed 1983·Granted May 14, 1985·15 cites·15 claims
- 0533US4488058ASnubber circuit for use in an uninterruptible power supplyNCR CO·Filed 1983·Granted Dec 11, 1984·7 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →