Assignee

AKERMAN STEVE

US·3 granted patents·35 citations·filing 2012–2012

Technology mixE21B3

Top patents by PatentIndex Score

3 records

0187US8893825B1Telescoping drilling derrick with guide track and top drive guide assemblyAKERMAN STEVE·Filed 2012·Granted Nov 25, 2014·16 cites·4 claims
0286US8684336B1Top drive and crown apparatus for drilling derrickAKERMAN STEVE·Filed 2012·Granted Apr 1, 2014·14 cites·4 claims
0373US8985239B1Drilling derrick and apparatus base assemblyAKERMAN STEVE·Filed 2012·Granted Mar 24, 2015·5 cites·8 claims

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