Patent Assignment
Reel/Frame 005296/0388
Released by Secured Party
Recorded: 1990-05-10
Pages: 87
Assignor
Assignee
WEATHERFORD U.S., INC.
1200 WEATHERFORD TOWER, 1360 POST OAK BOULEVARD, A DE CORP., HOUSTON, TEXAS, 77056
Covered Properties
(5)
High Pressure Piston and Seal
Patent:
4,270,440 →
Application:
06/014,016 →
Blast Joint and Protection Element Therefor
Patent:
4,381,821 →
Application:
06/238,988 →
Control Line Protector for Oil Well Tubing String
Patent:
4,601,334 →
Application:
06/597,852 →
Apparatus and Method for Inserting Flow Control Means into a Well Casing
Patent:
4,589,495 →
Application:
06/601,938 →
Hydraulic Safety Interlock System
Patent:
4,776,243 →
Application:
06/801,718 →
Related Assignments
(8)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Feb 27, 1981
From: GREENE GEORGE J.
To: WEATHERFORD/STONEBOR, INC., A CORP. OF TEX.
Reel/Frame 003875/0323 →
Assignment of Assignors Interest.
Jul 9, 1984
From: LOVEGROVE, PETER J.
To: WEATHERFORD/LAMB, INC., A CORP. OF TX
Reel/Frame 004327/0093 →
Assignment of Assignors Interest.
Jul 16, 1984
From: LANGER, FRIEDRICH H.; STRINGFELLOW, WILLIAM D.
To: WEATHERFORD U.S., INC.
Reel/Frame 004281/0600 →
Security Interest
Aug 1, 1985
From: WEATHERFORD U.S. , INC.
To: FIRST CITY NATIONAL BANK OF HOUSTON, 1001 MAIN STREET, HOUSTON, TEXAS 77002, A NATIONAL BANKING ASSOCIATION OF TEXAS
Reel/Frame 004442/0268 →
Security Interest
Sep 7, 1993
From: WEATHERFORD U.S., INC.
To: TEXAS COMMERCE BANK NATIONAL ASSOICATION
Reel/Frame 006677/0420 →
Security Interest
Sep 7, 1993
From: WEATHERFORD/LAMB, INC.
To: TEXAS COMMERCE BANK NATIONAL ASSOCIATION
Reel/Frame 006683/0516 →
Release
Apr 26, 1994
From: TEXAS COMMERCE BANK NATIONAL ASSOCIATION
To: WEATHERFORD/LAMB, INC.
Reel/Frame 006968/0274 →
Release from Security Agreement
Apr 26, 1994
From: TEXAS COMMERCE BANK NATIONAL ASSOCIATION
To: WEATHERFORD U.S., INC.
Reel/Frame 006968/0187 →