Individual holder
PRESTON JAMES N
3 granted patents·20 citations·filing 1975–1977
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0131US4171773AFire jet air displacement heat exchanger devicePRESTON JAMES N·Filed 1977·Granted Oct 23, 1979·7 cites·2 claims
- 0231US3991625AGravity-measuring device for water and mineral detectionPRESTON JAMES N·Filed 1975·Granted Nov 16, 1976·7 cites·2 claims
- 0329US4022064AGravity and velocity-change differentiatorPRESTON JAMES N·Filed 1976·Granted May 10, 1977·6 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →