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Inventor
WALKER BRUCE H
4 patents
⚠️ This page may combine multiple inventors who share the name “WALKER BRUCE H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHRISTENSEN INC
2 patents
US4244432A
Jan 13, 1981
Earth-boring drill bits
CHRISTENSEN INC
71 citations
95
US4073354A
Feb 14, 1978
Earth-boring drill bits
CHRISTENSEN INC
106 citations
94
SHELL OIL CO
1 patent
US4341273A
Jul 27, 1982
Rotary bit with jet nozzles
SHELL OIL CO
29 citations
89
(unassigned)
1 patent
US6085715A
Jul 11, 2000
Tamper resistant governor control rod cover
0 citations
47