Assignee
EDVARDSEN PER ESPEN
NO·3 granted patents·10 citations·filing 2008–2011
Top patents by PatentIndex Score
3 records- 0173US8066062B2Seal for a drill stringEDVARDSEN PER ESPEN·Filed 2008·Granted Nov 29, 2011·7 cites·9 claims
- 0247US8985229B2Sealing arrangement, and corresponding methodEDVARDSEN PER ESPEN·Filed 2008·Granted Mar 24, 2015·3 cites·6 claims
- 0344US8997851B2Grinding arrangement for tool joints on a drill stringEDVARDSEN PER ESPEN·Filed 2011·Granted Apr 7, 2015·0 cites·14 claims
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