Individual holder
BERGSTEIN FRANK D
US·4 granted patents·168 citations·filing 1989–1993
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0193US4960363AFluid flow driven engineBERGSTEIN FRANK D·Filed 1989·Granted Oct 2, 1990·87 cites·3 claims
- 0279US5333996ADual fluid rotor apparatusBERGSTEIN FRANK D·Filed 1993·Granted Aug 2, 1994·34 cites·17 claims
- 0376US5246342AWind rotor apparatusBERGSTEIN FRANK D·Filed 1992·Granted Sep 21, 1993·32 cites·14 claims
- 0455US5088884ARotor assembly for fluid driven engineBERGSTEIN FRANK D·Filed 1990·Granted Feb 18, 1992·15 cites·10 claims
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