Assignee
STREN CO
US·3 granted patents·69 citations·filing 1990–1995
Top patents by PatentIndex Score
3 records- 0160US5494109ABackflush filter system for downhole pumpsSTREN CO·Filed 1995·Granted Feb 27, 1996·42 cites·12 claims
- 0238US4969518AReciprocating rod type downhole pumpSTREN CO·Filed 1990·Granted Nov 13, 1990·15 cites·13 claims
- 0337US5413721ABackflush filter system for downhole pumpsSTREN CO·Filed 1993·Granted May 9, 1995·12 cites·18 claims
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