Assignee
SPEARS HARRY L
US·5 granted patents·105 citations·filing 1983–1990
Top patents by PatentIndex Score
5 records- 0181US4599054ATravelling valve assembly for a fluid pumpSPEARS HARRY L·Filed 1984·Granted Jul 8, 1986·35 cites·19 claims
- 0277US4848454ADownhole tool for use with a ball and seat traveling valve for a fluid pumpSPEARS HARRY L·Filed 1987·Granted Jul 18, 1989·34 cites·7 claims
- 0354US4504199AFluid pumpSPEARS HARRY L·Filed 1983·Granted Mar 12, 1985·13 cites·51 claims
- 0450US4531896AFluid pumpSPEARS HARRY L·Filed 1984·Granted Jul 30, 1985·11 cites·23 claims
- 0536US5086802ASafety check valveSPEARS HARRY L·Filed 1990·Granted Feb 11, 1992·12 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →