Patent Assignment
Reel/Frame 004435/0255
Security Interest
Recorded: 1985-08-01
Pages: 55
Covered Properties
(6)
Pneumatically Actuated Thread Protector for Pipe
Patent:
4,091,451 →
Application:
05/791,113 →
Apparatus for Measuring and Controlling a Force
Patent:
4,199,032 →
Application:
05/878,643 →
Tong Assembly
Patent:
4,346,629 →
Application:
06/145,905 →
Tong Assembly
Patent:
4,401,000 →
Application:
06/365,697 →
Power Pipe Tong Rotary Plunger Inserter
Patent:
4,442,736 →
Application:
06/416,405 →
Power Pipe Thread Cleaner
Patent:
4,433,448 →
Application:
06/419,119 →
Related Assignments
(7)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Apr 19, 1982
From: KINZBACH, ROBERT B.
To: WEATHERFORD/LAM, INC., A CORP. OF TX
Reel/Frame 003971/0927 →
Assignment of Assignors Interest.
Sep 9, 1982
From: TRUE, MARTIN E.; TIMMERMAN, TERRY D.
To: WEATHERFORD/LAMB, INC.
Reel/Frame 004046/0028 →
Assignment of Assignors Interest.
Sep 16, 1982
From: TRUE, MARTIN E.
To: WEATHERFORD/LAMB, INC., A CORP. OF TX
Reel/Frame 004035/0914 →
Released by Secured Party
May 10, 1990
From: FIRST CITY, TEXAS-HOUSTON, N.A. (SUCCESSOR OF FIRST CITY NATIONAL BANK OF HOUSTON, NA)
To: WEATHERFORD/LAMB, INC.
Reel/Frame 005296/0501 →
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 →
Assignment of Assignor's Interest
Jul 18, 2000
From: DAILEY INTERNATIONAL, INC.
To: WEATHERFORD U.S. L.P.
Reel/Frame 010977/0150 →