Inventor · disambiguated record
David J. Hesford
Also filed as: HESFORD DAVID J
4 granted patents·22 citations·filing 1975–1977
72Inventor score
Files withOTIS ELEVATOR CO4
Top patents by PatentIndex Score
4 records- 0164USD253100SObservation elevator cabOTIS ELEVATOR CO·Filed 1977·Granted Oct 9, 1979·9 cites·1 claims
- 0261USD252198SObservation elevator cabOTIS ELEVATOR CO·Filed 1977·Granted Jun 26, 1979·8 cites·1 claims
- 0352USD250278SWall of an elevator cabOTIS ELEVATOR CO·Filed 1975·Granted Nov 14, 1978·5 cites·1 claims
- 0426USD252199SObservation elevator cabOTIS ELEVATOR CO·Filed 1977·Granted Jun 26, 1979·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →