Inventor · disambiguated record
Frank A. Hollingshead
Also filed as: HOLLINGSHEAD FRANK A · SCHUMACHER PERCY W JR
3 granted patents·64 citations·filing 1976–1986
73Inventor score
Top patents by PatentIndex Score
3 records- 0166US4158973ARolling cutter drill bitREED TOOL CO·Filed 1978·Granted Jun 26, 1979·18 cites·2 claims
- 0259US4080091ADrill bitREED TOOL CO·Filed 1976·Granted Mar 21, 1978·15 cites·5 claims
- 0357US4749053ADrill bit having a thrust bearing heat sinkBAKER INT CORP·Filed 1986·Granted Jun 7, 1988·31 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →