Inventor · disambiguated record
John D. Parrish
Also filed as: PARRISH JOHN D
3 granted patents·115 citations·filing 1980–1987
72Inventor score
Top patents by PatentIndex Score
3 records- 0186US4369849ALarge diameter oil well drilling bitREED ROCK BIT CO·Filed 1980·Granted Jan 25, 1983·102 cites·7 claims
- 0245US4794822ARock bit manufacturing methodBAKER HUGHES INC·Filed 1987·Granted Jan 3, 1989·11 cites·6 claims
- 0324US4293167ARolling cutter drill bit with improved journal configurationREED TOOL CO·Filed 1980·Granted Oct 6, 1981·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →