Inventor · disambiguated record
Charles T. Helpinstill, Ii
Also filed as: HELPINSTILL CHARLES T · HELPINSTILL II CHARLES T · HELPINSTILL III CHARLES T
4 granted patents·61 citations·filing 1977–1980
77Inventor score
Top patents by PatentIndex Score
4 records- 0184US4145944AGuitar pick-up apparatusHELPINSTILL II CHARLES T·Filed 1978·Granted Mar 27, 1979·31 cites·6 claims
- 0259US4254684ABreakdown pianoHELPINSTILL III CHARLES T·Filed 1979·Granted Mar 10, 1981·16 cites·9 claims
- 0347US4212220AMagnetic sensor for a musical instrument and method of constructing sameHELPINSTILL CHARLES T·Filed 1977·Granted Jul 15, 1980·8 cites·15 claims
- 0436US4376402AFolding pianoHELPINSTILL II CHARLES T·Filed 1980·Granted Mar 15, 1983·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →