Patent Assignment
Reel/Frame 006680/0811
Change of Name
Recorded: 1993-07-15
Pages: 19
Assignor
BAKER OIL TOOLS, INC.
Executed: 1987-08-27
Assignee
BAKER HUGHES PRODUCTION TOOLS, INC.
3900 ESSEX LANE, #800, HOUSTON, TEXAS, 77027
Covered Property
(1)
Apparatus and Method for the Mechanical Sequential Release of Cementing Plugs
Patent:
4,345,651 →
Application:
06/133,363 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Jul 15, 1993
From: BAKER HUGHES PRODUCTION TOOLS, INC.
To: BAKER HUGHES INTEQ, INC.
Reel/Frame 006680/0849 →
Change of Name
Jul 15, 1993
From: BAKER INTERNATIONAL CORPORATION
To: BAKER OIL TOOLS, INC.
Reel/Frame 006680/0792 →
Merger
Jul 15, 1993
From: BAKER HUGHES PRODUCTION TOOLS, INC.
To: BAKER HUGHES DRILLING TECHNOLOGIES, INC.
Reel/Frame 006680/0830 →
Assignment of Assignor's Interest
Sep 7, 1993
From: BAKER HUGHES OILFIELD OPERATIONS, INC.
To: ENERPRO INTERNATIONAL, INC.
Reel/Frame 006680/0567 →
Assignment of Assignor's Interest
Sep 14, 1993
From: ENERPRO INTERNATIONAL, INC.
To: FIRST INTERSTATE BANK OF TEXAS, N.A.
Reel/Frame 006705/0467 →
Release of Security Interest
May 17, 1996
From: FIRST INTERSTATE BANK OF TEXAS, N.A.
To: ENERPRO INTERNATIONAL, INC.
Reel/Frame 007945/0859 →
Release of Lien
Aug 13, 1996
From: FIRST INTERSTATE BANK OF TEXAS, N.A.
To: ENERPRO INTERNATIONAL, INC.
Reel/Frame 008077/0049 →