Inventor · disambiguated record
Frank L. Campbell
Also filed as: CAMPBELL FRANK L
4 granted patents·146 citations·filing 1983–1984
80Inventor score
Technology areasE21B
Files withCHEVRON RES4
Top patents by PatentIndex Score
4 records- 0177US4601354AMeans and method for facilitating measurements while coringCHEVRON RES·Filed 1984·Granted Jul 22, 1986·52 cites·8 claims
- 0274US4499955ABattery powered means and method for facilitating measurements while coringCHEVRON RES·Filed 1983·Granted Feb 19, 1985·47 cites·11 claims
- 0358US4499956ALocking means for facilitating measurements while coringCHEVRON RES·Filed 1983·Granted Feb 19, 1985·27 cites·13 claims
- 0451US4492275AMeans and method for facilitating measurements while coringCHEVRON RES·Filed 1983·Granted Jan 8, 1985·20 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →