Patent Assignment
Reel/Frame 004342/0671
Assignment of Assignors Interest.
Recorded: 1984-10-16
Pages: 1
Assignee
HUGHES TOOL COMPANY - USA, A CORP OF DE
P.O. BOX 2539, HOUSTON, TEXAS, 77001
Covered Property
(1)
Tool Joint with Internal/External Make-Up Shoulders
Patent:
4,548,431 →
Application:
06/661,533 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Oct 16, 1984
From: HALL, JAMES R.; CUNNINGHAM, ROBERT A.
To: HUGHES TOOL COMPANY - USA, A CORP OF DE
Reel/Frame 004343/0127 →
Assignment of Assignors Interest.
Aug 14, 1989
From: HUGHES TOOL COMPANY, - USA, A DE. CORP.
To: BAKER HUGHES, INC., A DE. CORP.
Reel/Frame 005161/0030 →
Assignment of Assignors Interest.
Dec 5, 1990
From: BAKER HUGHES INCORPORATED
To: BH TOOL JOINTS, INC., A CORP. OF TX
Reel/Frame 005570/0504 →
Merger and Change of Name November 02, 1990 Delaware
Jun 20, 1991
From: BH TOOL JOINTS, INC. A CORP. OF TEXAS MERGED WITH AND INTO EVI TJ, INC. A CORP. OF DELAWARE
To: BH TOOL JOINTS, INC. A CORP. OF TEXAS
Reel/Frame 005741/0538 →
Assignment of Assignors Interest.
Jan 17, 1992
From: BH TOOL JOINTS, INC.
To: GRANT TFW, INC.
Reel/Frame 005974/0246 →
Change of Name
Sep 13, 2001
From: GRANT TFW, INC.
To: GRANT PRIDECO, INC.
Reel/Frame 012188/0299 →
Grant of Patent
Jan 3, 2003
From: GRANT PRIDECO, INC.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS
Reel/Frame 013323/0989 →