Inventor · disambiguated record
Dennis M. Spriggs
Also filed as: SPRIGGS DENNIS M · SPRIGGS DENNIS MITCHEL
4 granted patents·49 citations·filing 1975–1984
76Inventor score
Technology areasE21B
Files withDRESSER IND4
Top patents by PatentIndex Score
4 records- 0155US4637469AApparatus and method of well preparation for chemical treatment of produced fluidsDRESSER IND·Filed 1984·Granted Jan 20, 1987·23 cites·18 claims
- 0239US4151876ASingle string retrievable well packersDRESSER IND·Filed 1977·Granted May 1, 1979·13 cites·11 claims
- 0333US3963074ALocking device for use in well tubingDRESSER IND·Filed 1975·Granted Jun 15, 1976·7 cites·9 claims
- 0432US4056145AHydraulic holddown for well packer stingerDRESSER IND·Filed 1975·Granted Nov 1, 1977·6 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →