Inventor · disambiguated record
David F. Hemmings
Also filed as: HEMMINGS DAVID F
2 granted patents·44 citations·filing 1975–1993
64Inventor score
Top patents by PatentIndex Score
2 records- 0156US4020443AVariable temperature sensorCANADA WIRE & CABLE CO LTD·Filed 1975·Granted Apr 26, 1977·19 cites·5 claims
- 0248US5369697AMethod and apparatus for automatically switching between pulse code and DTMF signals generated by a telephoneBOSTON TECH INC·Filed 1993·Granted Nov 29, 1994·25 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →