Assignee
ACKER DRILL CO INC
3 granted patents·130 citations·filing 1978–1988
Top patents by PatentIndex Score
3 records- 0182US4189015ADrill bits for obtaining core samplesACKER DRILL CO INC·Filed 1978·Granted Feb 19, 1980·60 cites·5 claims
- 0280US4211294AImpregnated diamond drill bitACKER DRILL CO INC·Filed 1978·Granted Jul 8, 1980·59 cites·9 claims
- 0328US4844184ALock device for hollow stem augersACKER DRILL CO INC·Filed 1988·Granted Jul 4, 1989·11 cites·22 claims
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