Individual holder
LAMPREY DONALD F
4 granted patents·140 citations·filing 1977–1988
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0193US4274023ACompact variable speed drive for electric motorLAMPREY DONALD F·Filed 1979·Granted Jun 16, 1981·108 cites·4 claims
- 0260US4529062AElevator systemLAMPREY DONALD F·Filed 1982·Granted Jul 16, 1985·17 cites·5 claims
- 0345US4162718AHydraulic elevatorLAMPREY DONALD F·Filed 1977·Granted Jul 31, 1979·9 cites·4 claims
- 0432US4934970AThrust-drag instrumentation for power boatLAMPREY DONALD F·Filed 1988·Granted Jun 19, 1990·6 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →