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Patent Assignment Abstract of Title
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Total Assignments: 7
Patent #:
4221503
Issue Dt:
09/09/1980
Application #:
05860935
Filing Dt:
12/15/1977
Inventor:
MARTIN DEE CHERRINGTON
Title:
DRILLING METHOD AND APPARATUS FOR LARGE DIAMETER PIPE
Assignment: 1
Reel/Frame:
005165/0360Recorded: 10/20/1989Pages: 24
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
READING & BATES CONSTRUCTION CO., (NOW KNOWN AS ASSOCIATED PIPE LINE CONTRACTORS, INC.)
Exec Dt:
05/22/1986
Assignee:
READING & BATES HORIZONTAL DRILLING CO., A CORP. OF NV
2300 MID-CONTINENT TOWER,
TULSA,, OKLAHOMA 74103
Correspondent:
ALLEGRETTI & WITCOFF, LTD.
10 SOUTH WACKER DR.
CHICAGO, IL 60606
Assignment: 2
Reel/Frame:
005165/0360Recorded: 10/20/1989Pages: 24
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
READING & BATES CONSTRUCTION CO., (NOW KNOWN AS ASSOCIATED PIPE LINE CONTRACTORS, INC.)
Exec Dt:
05/22/1986
Assignee:
READING & BATES HORIZONTAL DRILLING CO., A CORP. OF NV
2300 MID-CONTINENT TOWER,
TULSA,, OKLAHOMA 74103
Correspondent:
ALLEGRETTI & WITCOFF, LTD.
10 SOUTH WACKER DR.
CHICAGO, IL 60606
Assignment: 3
Reel/Frame:
004725/0039Recorded: 04/03/1987Pages: 13
Conveyance:
SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
READING & BATES HORIZONTAL DRILLING CO.
Exec Dt:
11/21/1986
Assignee:
CHASE MANHATTAN BANK, N.A., THE
Correspondent:
MILBANK, TWEED, HADLEY & MCCLOY
1 CHASE MANHATTAN PLAZA
NEW YORK, NY 10005
Assignment: 4
Reel/Frame:
005161/0834Recorded: 10/20/1989Pages: 5
Conveyance:
CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). MAY 21, 1987
Assignor:
READING & BATES HORIZONTAL DRILLING CO.
Exec Dt:
05/21/1987
Assignee:
INARC DRILLING, INC.
Correspondent:
ALLEGRETTI & WITCOFF, LTD.
10 SOUTH WACKER DR.
CHICAGO, IL 60606
Assignment: 5
Reel/Frame:
005173/0370Recorded: 10/20/1989Pages: 12
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
INARC DRILLING INC.
Exec Dt:
06/01/1989
Assignee:
SPIE HORIZONTAL DRILLING, INC.
3430 ROGERDALE RD.
A CORP. OF TX
HOUSTON, TEXAS 77042
Correspondent:
A. BLAIR HUGHES
ALLEGRETTI & WITCOFF, LTD.
10 SOUTH WACKER DR.
CHICAGO, IL 60606
Assignment: 6
Reel/Frame:
006492/0424Recorded: 03/15/1993Pages: 4
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor:
SPIE HORIZONTAL DRILLING, INC.
Exec Dt:
10/29/1992
Assignee:
SPIE GROUP, INC.
38 OLD RIDGEBURY RD.
DANBURY, CONNECTICUT 06810
Correspondent:
DAVID M. FRISCHKORN
ALLEGRETTI & WITCOFF, LTD.
10 SOUTH WACKER DRIVE
SUITE 3000
CHICAGO, IL 60606
Assignment: 7
Reel/Frame:
008503/0584Recorded: 05/15/1997Pages: 4
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
SPIE GROUP, INC.
Exec Dt:
01/01/1997
Assignee:
L. K. COMSTOCK & COMPANY, INC.
ONE NORTH LEXINGTON AVENUE
WHITE PLAINS, NEW YORK 10601
Correspondent:
MCDONNELL BOEHNEN HULBERT & BERGHOFF
DAVID M. FRISCHKORN
300 S. WACKER DRIVE
CHICAGO, ILLINOIS 60606

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