Individual holder
MARSHALL DON J
6 granted patents·70 citations·filing 1974–1987
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0169US4775171AHigh pressure field repair couplingMARSHALL DON J·Filed 1987·Granted Oct 4, 1988·37 cites·1 claims
- 0261US4149384AFluid pressure amplifierMARSHALL DON J·Filed 1976·Granted Apr 17, 1979·12 cites·11 claims
- 0359US3948051AFluid pressure amplifierMARSHALL DON J·Filed 1974·Granted Apr 6, 1976·13 cites·39 claims
- 0432US3949794AWheel standMARSHALL DON J·Filed 1974·Granted Apr 13, 1976·3 cites·11 claims
- 0530US4317423AAnchorMARSHALL DON J·Filed 1980·Granted Mar 2, 1982·3 cites·10 claims
- 0630US3948306ATire removing toolMARSHALL DON J·Filed 1974·Granted Apr 6, 1976·2 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →