Patent Assignment
Reel/Frame 003958/0813
Assignment of Assignors Interest.
Recorded: 1982-03-25
Pages: 2
Assignor
STEPHEN, DAVID D.
Executed: 1980-01-14
Assignee
HOMCO INTERNATIONAL INC., A CORP. OF DE.
P.O. BOX 2442, HOUSTON, TEXAS, 77001
Covered Property
(1)
Yield Strength Determination of Terromgnetic Materials
Patent:
4,335,352 →
Application:
06/102,790 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 30, 1993
From: HOMCO INTERNATIONAL, INC.
To: WEATHERFORD U.S., INC.
Reel/Frame 006663/0918 →
Security Interest
Sep 7, 1993
From: WEATHERFORD U.S., INC.
To: TEXAS COMMERCE BANK NATIONAL ASSOICATION
Reel/Frame 006677/0420 →
Release from Security Agreement
Apr 26, 1994
From: TEXAS COMMERCE BANK NATIONAL ASSOCIATION
To: WEATHERFORD U.S., INC.
Reel/Frame 006968/0187 →