Individual holder
BROWN HAROLD D
US·3 granted patents·42 citations·filing 1981–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0158US5275540ALinear fluid motor systemBROWN HAROLD D·Filed 1992·Granted Jan 4, 1994·21 cites·50 claims
- 0251US4462464AWellhead with hydraulic pump actuatorBROWN HAROLD D·Filed 1981·Granted Jul 31, 1984·14 cites·14 claims
- 0338US4899638AAutomatically-reversing piston-and-cylinder unitBROWN HAROLD D·Filed 1988·Granted Feb 13, 1990·7 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →