Patent Assignment
Reel/Frame 004560/0743
Assignment of Assignors Interest.
Recorded: 1986-05-19
Pages: 1
Assignor
THOMPSON, JAMES E.
Executed: 1986-06-06
Assignee
UNITED STATES STEEL CORPORATION
PITTSBURGH, PENNSYLVANIA
Covered Property
(1)
Well Pumping Unit
Patent:
4,651,578 →
Application:
06/864,240 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Apr 6, 1993
From: NATIONAL-OILWELL
To: CITICORP USA, INC., AS COLLATERAL AGENT
Reel/Frame 006486/0856 →
Release of Security Interest
Mar 1, 1995
From: NATIONAL-OILWELL
To: CITICORP USA, INC., AS COLLATERAL AGENT
Reel/Frame 007453/0241 →
Security Interest
Mar 7, 1995
From: NATIONAL-OILWELL
To: CITICORP USA, INC., AS COLLATERAL AGENT
Reel/Frame 007467/0232 →
Release of Security Interest
Jan 24, 1996
From: NATIONAL-OILWELL
To: CITICORP USA, INC., AS COLLATERAL AGENT
Reel/Frame 007613/0782 →