Individual holder
PROEHL NORMAN P
4 granted patents·32 citations·filing 1976–1988
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0170US4050170ADredge cutter headPROEHL NORMAN P·Filed 1976·Granted Sep 27, 1977·22 cites·8 claims
- 0231US4826219AHydraulic dredge pipeline couplingPROEHL NORMAN P·Filed 1988·Granted May 2, 1989·8 cites·1 claims
- 0325US4470209ADredge swinging apparatusPROEHL NORMAN P·Filed 1983·Granted Sep 11, 1984·2 cites·4 claims
- 0423US4593484AMethod of dredging with a pivotally mounted cutter headPROEHL NORMAN P·Filed 1985·Granted Jun 10, 1986·0 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →