Patent Assignment
Reel/Frame 006696/0339
Assignment of Assignor's Interest
Recorded: 1993-09-20
Pages: 3
Assignor
WEATHERFORD, U.S., INC.
Executed: 1993-08-09
Assignee
TUBE-ALLOY CORPORATION
9500 WEST TIDWELL, HOUSTON, TEXAS, 77041
Covered Property
(1)
Sliding Sleeve Valve
Patent:
5,263,683 →
Application:
07/878,734 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jun 23, 1992
From: WONG, FRED S.
To: GRACE ENERGY CORPORATION, A CORP. OF DE
Reel/Frame 006199/0720 →
Assignment of Assignor's Interest
Aug 30, 1993
From: HOMCO INTERNATIONAL, INC.
To: WEATHERFORD U.S., INC.
Reel/Frame 006663/0918 →
Assignment of Assignor's Interest
Sep 30, 1996
From: WEATHERFORD U.S., INC.
To: TUBE-ALLOY CORPORATION
Reel/Frame 008153/0542 →
Assignment of Assignor's Interest
Jul 18, 2000
From: TUBE-ALLOY CORP.
To: WEATHERFORD/LAMB, INC.
Reel/Frame 010977/0141 →