Assignee
TWARDOWSKI ERIC M
US·3 granted patents·17 citations·filing 2009–2012
Technology mixE21B3
Top patents by PatentIndex Score
3 records- 0175US8074749B2Earth removal member with features for facilitating drill-throughTWARDOWSKI ERIC M·Filed 2009·Granted Dec 13, 2011·13 cites·28 claims
- 0269US8528669B2Earth removal member with features for facilitating drill-throughTWARDOWSKI ERIC M·Filed 2011·Granted Sep 10, 2013·3 cites·17 claims
- 0356US9500044B2Tubular coupling deviceTWARDOWSKI ERIC M·Filed 2012·Granted Nov 22, 2016·1 cites·23 claims
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