Individual holder
ROBERTS MARVIN A
3 granted patents·138 citations·filing 1975–1980
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0193US4215827AFilm loop apparatusROBERTS MARVIN A·Filed 1979·Granted Aug 5, 1980·79 cites·11 claims
- 0284US4022187AFloating solar heater for swimming poolsROBERTS MARVIN A·Filed 1975·Granted May 10, 1977·58 cites·5 claims
- 0325US4350278ADemand drive componentROBERTS MARVIN A·Filed 1980·Granted Sep 21, 1982·1 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →