Patent Assignment
Reel/Frame 004035/0336
Assignment of Assignors Interest.
Recorded: 1981-12-11
Pages: 1
Assignee
HUGHES TOOL COMPANY, A CORP. OF DE.
P.O. BOX 2539, HOUSTON, TEXAS, 77001
Covered Property
(1)
Reversal Mechanism for Power Tong
Patent:
4,436,002 →
Application:
06/329,971 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Dec 11, 1981
From: KENNINGTON, KERRY S.; BAKER, RONALD
To: HUGHES TOOL COMPANY, A CORP. OF DE.
Reel/Frame 004035/0334 →
Assignment of Assignors Interest.
Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →
Assignment of Assignors Interest.
Aug 18, 1988
From: BAKER HUGHES INCORPORATED
To: HUGHES TOOL COMPANY-USA, A DE CORP.
Reel/Frame 004944/0763 →
Assignment of Assignors Interest.
Jan 17, 1989
From: HUGHES TOOL CONPANY-USA
To: VARCO INTERNATIONAL, INC., A CA. CORP.
Reel/Frame 005013/0843 →