Patent Assignment
Reel/Frame 004419/0435
Assignment of Assignors Interest.
Recorded: 1985-06-17
Pages: 3
Assignors
LINDSEY, HIRAM E. JR.,
Executed: 1985-01-25
ALLWIN, ROGER P.
Executed: 1985-01-25
YOKLEY, JOHN M.
Executed: 1985-01-25
Assignee
MWL TOOL AND SUPPLY COMPANY, A CORP OF DE
MIDLAND, TEXAS
Covered Property
(1)
Pbr with Latching System for Tubing
Patent:
4,601,343 →
Application:
06/698,145 →
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 →