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Inventors

Randy Gene Snider David Othman Shahin John Timothy Allen Kevin Leon Gray Gary Thompson

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WEATHERFORD TECHNOLOGY HOLDINGS, LLC

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WEATHERFORD/LAMB, INC., Assignor

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TOP DRIVE CASING SYSTEM

13/78,743 | U.S. Patent Application

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Location ELECTRONIC

Filed April 1, 2011

Examiner HOANG C DANG

Class 166

Art Group 3672

Patent No. 8,230,933

Case Type Utility - 166/380000

Status Patented Case

Parent 10/350,218 Patented

Parent 09/550,721 Patented

Last Updated: 6 years, 2 months ago

Date	#	Transaction
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13/78,743 | U.S. Patent Application

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