Individual holder
CHAPPELL WALTER L
3 granted patents·200 citations·filing 1976–1978
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0194US4258271APower converter and methodCHAPPELL WALTER L·Filed 1978·Granted Mar 24, 1981·121 cites·5 claims
- 0291US4023041AApparatus for generating electricity and power from natural water flowCHAPPELL WALTER L·Filed 1976·Granted May 10, 1977·68 cites·5 claims
- 0350US4087207AMethod and apparatus for gas induced production of liquid from wellsCHAPPELL WALTER L·Filed 1976·Granted May 2, 1978·11 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →