Assignee
KOOPMANS ROBERT
CA·3 granted patents·41 citations·filing 1985–1986
Top patents by PatentIndex Score
3 records- 0148US4657306AHydraulic rock breaking toolKOOPMANS ROBERT·Filed 1985·Granted Apr 14, 1987·18 cites·7 claims
- 0239US4760741ABorehole dilatometer with intensifierKOOPMANS ROBERT·Filed 1986·Granted Aug 2, 1988·11 cites·15 claims
- 0335US4733568ABorehole dilatometer intensifierKOOPMANS ROBERT·Filed 1986·Granted Mar 29, 1988·12 cites·6 claims
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