Assignee
SIGMA TEK INC
US·3 granted patents·87 citations·filing 1982–1991
Top patents by PatentIndex Score
3 records- 0175US4820140ASelf-lubricating rotary vane pumpSIGMA TEK INC·Filed 1987·Granted Apr 11, 1989·40 cites·1 claims
- 0274US5181844ARotary vane pump with carbon/carbon vanesSIGMA TEK INC·Filed 1991·Granted Jan 26, 1993·43 cites·4 claims
- 0326US4469473AReciprocating piston apparatusSIGMA TEK INC·Filed 1982·Granted Sep 4, 1984·4 cites·28 claims
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