Patent Assignment
Reel/Frame 003928/0431
Assignment of Assignors Interest.
Recorded: 1981-10-01
Pages: 1
Assignor
LOCKYEAR, KEVIN W.
Executed: 1981-09-15
Assignee
CENTRILIFT-HUGHES, INC., A CORP. OF DE.
P.O. BOX 2539, HOUSTON, TEXAS, 77001
Covered Property
(1)
Backspin Detection Circuit for a Submersible Pump
Patent:
4,410,845 →
Application:
06/307,558 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of a Part of Assignors Interest
Apr 25, 1983
From: CEBTRILIFT-HUGHES INC.
To: HUGHES TOOL COMPANY
Reel/Frame 004123/0711 →
Assignment of Assignors Interest.
Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →
Merger and Change of Name Effective on December 31, 1989, in Pennsylvania
Sep 17, 1990
From: ATOCHEM INC., A DE CORP. (MERGED INTO); M&T CHEMICALS INC., A DE CORP. (MERGED INTO); PENNWALT CORPORATION, A PA CORP. (CHANGED TO)
To: ATOCHEM NORTH AMERICA, INC., A PA CORP.
Reel/Frame 005496/0003 →