Inventor · disambiguated record
David Spence
Also filed as: SPENCE DAVID · SPENCE DAVID M
2 granted patents·1 pending application·9 citations·filing 1979–2023
48Inventor score
Top patents by PatentIndex Score
3 records- 0148US2025262696A1Pin puller assembly and methodsENERPAC TOOL GROUP CORP·Filed 2022·Application pending·0 cites
- 0235US4261400AHydraulically powered attachment for a tractorSPENCE DAVID M·Filed 1979·Granted Apr 14, 1981·9 cites·2 claims
- 0321USD1105877SColumn member for a pin puller tool assemblyENERPAC TOOL GROUP CORP·Filed 2023·Granted Dec 16, 2025·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →