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Inventors

ALAN MARTYN EDDISON RONNIE HARDIE

Assignee

NATIONAL OILWELL DHT, L.P.

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ANDERGAUGE LIMIITED, Assignor NOV DOWNHOLE EURASIA LIMITED, Assignor

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PERCUSSIVE TOOL

09/555,822 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)

Filed June 5, 2000

Examiner WILLIAM P NEUDER

Class 175

Art Group 3672

Patent No. 6,431,294

Case Type Utility - 175/415000

Status Patented Case

Parent PCT/GB98/03710 -

Child 9726204.2

Last Updated: 5 years, 6 months ago

Date	#	Transaction
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09/555,822 | U.S. Patent Application

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