Assignee
ROCK BIT IND INC
US·5 granted patents·161 citations·filing 1982–1990
Top patents by PatentIndex Score
5 records- 0176US4466621ARotary drill bit multiple seal assemblyROCK BIT IND INC·Filed 1982·Granted Aug 21, 1984·41 cites·22 claims
- 0275US5074367ARock bit with improved shank protectionROCK BIT IND INC·Filed 1990·Granted Dec 24, 1991·61 cites·3 claims
- 0366US4730681ARock bit cone lock and methodROCK BIT IND INC·Filed 1986·Granted Mar 15, 1988·36 cites·25 claims
- 0458US4519614AGenerally cylindrical rotary drill face seal having improved resistance to radial distortionROCK BIT IND INC·Filed 1984·Granted May 28, 1985·16 cites·14 claims
- 0528US4537409ARadial rock bit sealROCK BIT IND INC·Filed 1984·Granted Aug 27, 1985·7 cites·21 claims
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