Patent Assignment
Reel/Frame 003862/0410
Assignment of Assignors Interest.
Recorded: 1980-12-22
Pages: 3
Covered Property
(1)
Holddown and Packoff Apparatus
Patent:
4,416,472 →
Application:
06/219,323 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Feb 22, 1988
From: SMITH INTERNATIONAL, INC.
To: CAMERON IRON WORKS USA INC.
Reel/Frame 004833/0129 →
Assignment of Assignors Interest.
Feb 4, 1991
From: CAMERA IRON WORKS USA, INC., A CORP OF DE
To: COOPER INDUSTRIES, INC.
Reel/Frame 005587/0874 →
Assignment of Assignor's Interest
May 5, 1995
From: SMITH INTERNATIONAL, INC.
To: COOPER INDUSTRIES, INC.
Reel/Frame 007462/0554 →