Assignee

ERC IND

CA·2 granted patents·79 citations·filing 1998–2005

Technology mixE21B2 F16L1

Top patents by PatentIndex Score

2 records

0183US7275591B2Tubing hanger with ball valve in production stringERC IND·Filed 2005·Granted Oct 2, 2007·30 cites·13 claims
0263US6015009ACasing and tubing hanger systemERC IND·Filed 1998·Granted Jan 18, 2000·49 cites·3 claims

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