Individual holder
HART RONALD D
US·3 granted patents·76 citations·filing 1977–1993
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0171US4932700AMooring line shackleHART RONALD D·Filed 1989·Granted Jun 12, 1990·37 cites·3 claims
- 0258US4161988APortable earth core sampling machineHART RONALD D·Filed 1977·Granted Jul 24, 1979·24 cites·10 claims
- 0347US5322133AApparatus for obtaining a soil core sampleHART RONALD D·Filed 1993·Granted Jun 21, 1994·15 cites·10 claims
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