Patent Assignment
Reel/Frame 004889/0156
Assignment of Assignors Interest.
Recorded: 1988-05-09
Pages: 4
Assignee
LINDSEY COMPLETION SYSTEMS, INC., A CORP. OF DE.
MIDLAND, TEXAS
Covered Property
(1)
Liner Hanger with Retrievable Ball Valve Seat
Patent:
4,828,037 →
Application:
07/191,578 →
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 →