Assignee
DEWALD JACK JAMES
4 granted patents·58 citations·filing 1979–1990
Top patents by PatentIndex Score
4 records- 0174US4976210AMethod and apparatus for treating hazardous waste materialsDEWALD JACK JAMES·Filed 1990·Granted Dec 11, 1990·25 cites·25 claims
- 0249US4520994ASub-surface safety gate valveDEWALD JACK JAMES·Filed 1983·Granted Jun 4, 1985·14 cites·10 claims
- 0347US4392631ASub-surface safety gate valveDEWALD JACK JAMES·Filed 1979·Granted Jul 12, 1983·10 cites·15 claims
- 0441US4522258AUnitized well testing apparatus for use in hostile environmentsDEWALD JACK JAMES·Filed 1982·Granted Jun 11, 1985·9 cites·9 claims
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