Assignee

BRETT J FORD

US·1 granted patent·218 citations·filing 1990–1990

Technology mixB23Q1 E21B1 G01B1

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1 record

0195US5131478ALow friction subterranean drill bit and related methodsBRETT J FORD·Filed 1990·Granted Jul 21, 1992·218 cites·26 claims

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