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Patent Assignment Abstract of Title

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Total Assignments: 1

Patent #:	6123337	Issue Dt:	09/26/2000	Application #:	08980917	Filing Dt:	12/01/1997
Inventors:	ZHIGANG FANG, SUJIAN HUANG, CHRIS E. CAWTHORNE, BRIAN A. JAMES, G. STEVE KYKER et al
Title:	COMPOSITE EARTH BORING BIT SEAL

Assignment: 1

Reel/Frame:

Recorded: 05/19/1998

Pages: 6

Conveyance:

ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignors:

Exec Dt:

04/30/1998

Exec Dt:

05/12/1998

Exec Dt:

05/01/1998

Exec Dt:

05/07/1998

Exec Dt:

05/14/1998

Exec Dt:

04/30/1998

Exec Dt:

05/11/1998

Assignee:

16740 HARDY STREET

HOUSTON, TEXAS 77032

Correspondent:

CHRISTIE, PARKER & HALE, LLP

GRANT T. LANGTON

P.O. BOX 7068

PASADENA, CA 91109-7068

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