Assignee

LEWAL DRILLING LTD

CA·2 granted patents·28 citations·filing 2003–2005

Technology mixE21B2

Top patents by PatentIndex Score

2 records

0164US6910542B1Acoustic flow pulsing apparatus and method for drill stringLEWAL DRILLING LTD·Filed 2003·Granted Jun 28, 2005·23 cites·25 claims
0259US7059426B2Acoustic flow pulsing apparatus and method for drill stringLEWAL DRILLING LTD·Filed 2005·Granted Jun 13, 2006·5 cites·15 claims

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