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SUBSEA CASING DRILLING SYSTEM
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Publication number 20170198526
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Publication date Jul 13, 2017
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Weatherford Technology Holdings, LLC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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SUBSEA CASING DRILLING SYSTEM
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Publication number 20170051561
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Publication date Feb 23, 2017
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Weatherford Technology Holdings, LLC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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SUBSEA DRILLING WITH CASING
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Publication number 20150184461
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Publication date Jul 2, 2015
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WEATHERFORD/LAMB, INC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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SUBSEA DRILLING WITH CASING
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Publication number 20150060078
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Publication date Mar 5, 2015
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WEATHERFORD/LAMB, INC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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BALL SEAT APPARATUS AND METHOD
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Publication number 20140199196
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Publication date Jul 17, 2014
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WEATHERFORD/LAMB, INC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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SUBSEA CASING DRILLING SYSTEM
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Publication number 20130233547
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Publication date Sep 12, 2013
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WEATHERFORD/LAMB, INC.
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Eric M. TWARDOWSKI
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E21 - EARTH DRILLING MINING
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TUBULAR COUPLING DEVICE
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Publication number 20120298376
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Publication date Nov 29, 2012
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Eric M. Twardowski
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E21 - EARTH DRILLING MINING
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Earth boring tool
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Publication number 20060237234
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Publication date Oct 26, 2006
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Dennis Tool Company
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Mahlon D. Dennis
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E21 - EARTH DRILLING MINING
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Drilling tool
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Publication number 20060102388
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Publication date May 18, 2006
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Dennis Tool Company
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Mahlon Dennis
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E21 - EARTH DRILLING MINING