IP Library › Assignment 003795/0780
Patent Assignment
Reel/Frame 003795/0780

Assignment of Assignors Interest.

Recorded: 1980-08-18 Pages: 2
Assignor
HARDCASTLE PHILLIP
Executed: 1980-07-30
Assignee
Covered Property (1)
Seal for Wellheads
Patent: 4,291,889 →
Application: 06/179,021 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. Nov 19, 1985
From: CACTUS PIPE AND SUPPLY CO.
To: WELLHEAD EQUIPMENT CO., INC., A CORP. OF TEXAS
Reel/Frame 004480/0197 →
Assignment of Assignor's Interest Aug 21, 1996
From: INGRAM CACTUS COMPANY
To: COOPER CAMERON CORPORATION
Reel/Frame 008113/0832 →