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Patent Assignment Abstract of Title
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Total Assignments: 2
Patent #:
4673044
Issue Dt:
06/16/1987
Application #:
06761915
Filing Dt:
08/02/1985
Inventors:
LOUIS K. BIGELOW, RICHARD H. GRAPPENDORF, ALEXANDER MESKIN
Title:
EARTH BORING BIT FOR SOFT TO HARD FORMATIONS
Assignment: 1
Reel/Frame:
004474/0927Recorded: 08/02/1985Pages: 2
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors:
BIGELOW, LOUIS K.
Exec Dt:
07/25/1985
GRAPPENDORF, RICHARD H.
Exec Dt:
07/25/1985
MESKIN, ALEXANDER R.
Exec Dt:
07/25/1985
Assignee:
NORTON CHRISTENSEN, INC., 365 BUGATTI STREET, SALT LAKE CITY, UTAH, 84126, A CORP OF
UTAH
Correspondent:
MARIO A. MARTELLA
BEEHLER, PAVITT, SIEGEMUND, JAGGER
AND MARTELLA, 3435 WILSHIRE BLVD.
STE. 1100
LOS ANGELES, CA 90010-1978
Assignment: 2
Reel/Frame:
004771/0834Recorded: 09/21/1987Pages: 20
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors:
NORTON COMPANY
Exec Dt:
12/30/1986
NORTON CHRISTENSEN, INC.
Exec Dt:
12/30/1986
Assignee:
EASTMAN CHRISTENSEN COMPANY
A JOINT VENTURE OF DE
NOT PROVIDED
Correspondent:
LADAS & PARRY
26 WEST 61ST ST.
NEW YORK, NY 10023

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