Assignee
BENDER EMIL A
5 granted patents·181 citations·filing 1975–1986
Top patents by PatentIndex Score
5 records- 0185US4242057ATandem long stroke reciprocating mud pump assemblyBENDER EMIL A·Filed 1979·Granted Dec 30, 1980·43 cites·13 claims
- 0282US4388837APositive engagement fail safe mechanism and lift belt construction for long stroke, well pumping unitBENDER EMIL A·Filed 1982·Granted Jun 21, 1983·41 cites·10 claims
- 0377US3986564AWell rigBENDER EMIL A·Filed 1975·Granted Oct 19, 1976·46 cites·30 claims
- 0476US4391155AReciprocating drive and reversing mechanism for long stroke, well pumping unitBENDER EMIL A·Filed 1982·Granted Jul 5, 1983·31 cites·5 claims
- 0560US4651582ACounterbalanced pumpsBENDER EMIL A·Filed 1986·Granted Mar 24, 1987·20 cites·5 claims
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