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Click below for detailed party information:

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

09/550,721 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)

Filed April 17, 2000

Examiner HOANG C DANG

Class 166

Art Group 3672

Patent No. 6,536,520

Case Type Utility - 166/078100

Status Patented Case

Child 10/350,218 Patented

Child 10/389,483 Patented

Child 10/795,129 Patented

Child 11/932,619 Patented

Child 13/78,743 Patented

Child 11/932,769 Patented

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Last Updated: 6 years, 7 months ago

Date	#	Transaction
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09/550,721 | U.S. Patent Application

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