Individual holder
SPACER JOHN P
US·3 granted patents·56 citations·filing 1983–1987
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0166US4765144ASolar-powered Rankine cycle pumping engineSPACER JOHN P·Filed 1987·Granted Aug 23, 1988·29 cites·10 claims
- 0264US4720978ASolar-powered rankine cycle pumping engineSPACER JOHN P·Filed 1986·Granted Jan 26, 1988·27 cites·8 claims
- 0322US4484865AFluid pump for use down a wellSPACER JOHN P·Filed 1983·Granted Nov 27, 1984·0 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →