Patent Assignment
Reel/Frame 004891/0876
Assignment of Assignors Interest.
Recorded: 1988-05-16
Pages: 4
Assignors
LINDSEY, HIRAM E.
Executed: 1988-05-06
ALLWIN, ROGER P.
Executed: 1988-05-09
ADAMS, RICHARD W.
Executed: 1988-05-09
Assignee
LINDSEY COMPLETION SYSTEMS, INC.
A CORP. OF DE, MIDLAND, TEXAS
Covered Property
(1)
Liner Hanger with Collapsible Ball Valve Seat
Patent:
4,862,966 →
Application:
07/194,131 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Dec 3, 1993
From: LINDSEY COMPLETION SYSTEMS, INC.
To: MASX ENERGY SERVICES GROUP, INC.
Reel/Frame 006783/0444 →
Assignment of Assignor's Interest
Jan 12, 1994
From: MASX ENERGY SERVICES GROUP, INC. (A DELAWARE CORPORATION)
To: SMITH INTERNATIONAL, INC. (A DELAWARE CORPORATION)
Reel/Frame 006822/0975 →