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Trademark Assignment Abstract of Title

Total Assignments: 4
Serial #:
Filing Dt:
01/05/1987
Reg #:
Reg. Dt:
09/08/1987
Mark:
VORTOIL
Assignment: 1
Reel/Frame:
0697/0158   Recorded: 03/15/1990Pages: 0
Conveyance:
ASSIGNS THE ENTIRE INTEREST AND THE GOODWILL
Assignor:
Exec Dt:
10/20/1989
Entity Type:
UNKNOWN
Citizenship:
NONE
Assignee:
600 NORTH DAIRY ASHFORD ROAD
HOUSTON, TEXAS 77252
Entity Type:
COMPANY
Citizenship:
DELAWARE
Correspondent:
Assignment: 2
Reel/Frame:
1622/0782   Recorded: 08/27/1997Pages: 3
Conveyance:
ASSIGNS THE ENTIRE INTEREST
Assignor:
Exec Dt:
04/01/1996
Entity Type:
CORPORATION
Citizenship:
DELAWARE
Assignee:
HAMMERSLEY HOUSE, 2ND FLOOR, 5-8 WARWICK STREET
LONDON, ENGLAND W1R 6JE
Entity Type:
CORPORATION
Citizenship:
ENGLAND
Correspondent:
BAKER HUGHES INCORPORATED
LORETTA BOGAARD
PATENT DEPARTMENT
3900 ESSEX LANE, SUITE 1200
HOUSTON, TX 77027
Assignment: 3
Reel/Frame:
2379/0880   Recorded: 12/07/2001Pages: 11
Conveyance:
ASSIGNS THE ENTIRE INTEREST
Assignors:
Exec Dt:
10/30/2001
Entity Type:
CORPORATION
Citizenship:
DELAWARE
Exec Dt:
10/30/2001
Entity Type:
UNKNOWN
Citizenship:
NONE
Assignee:
14990 YORKTOWN PLAZA DRIVE
HOUSTON, TEXAS 77040
Entity Type:
CORPORATION
Citizenship:
DELAWARE
Correspondent:
CURTIS, MALLET-PREVOST, COLT & MOSLE LLP
MICHAEL J. BROWN
101 PARK AVENUE
NEW YORK, NY 10178-0061
Assignment: 4
Reel/Frame:
2406/0488   Recorded: 01/30/2002Pages: 4
Conveyance:
CHANGE OF NAME
Assignor:
Exec Dt:
01/17/2002
Entity Type:
CORPORATION
Citizenship:
DELAWARE
Assignee:
14990 YORKTOWN PLAZA DRIVE
HOUSTON, TEXAS 77040
Entity Type:
CORPORATION
Citizenship:
DELAWARE
Correspondent:
CURTIS, MALLET-PREVOST, COLT & MOSLE LLP
MICHAEL J. BROWN
101 PARK AVE.
NEW YORK, NY 10178-0061

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