Patent Assignment
Reel/Frame 003934/0342
Assignment of Assignors Interest.
Recorded: 1981-09-25
Pages: 1
Assignor
DIEHL, ROBERT J.
Executed: 1981-09-21
Assignee
W-K-M WELLHEAD SYSTEMS, INC., A CORP. OF LA.
1500 N. MARKET ST., SUITE A-100, SHREVEPORT, LOUISIANA, 71107
Covered Property
(1)
Seal Assembly
Patent:
4,384,730 →
Application:
06/305,578 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jun 22, 1984
From: ACF INDUSTRIES, INCORPORATED A NEW JERSEY CORP
To: JOY MANUFACTURING COMPANY
Reel/Frame 004280/0243 →
Assignment of Assignors Interest.
Jul 19, 1984
From: W-K-M WELLHEAD SYSTEMS, INC.
To: ACF INDUSTRIES, INCORPORATED
Reel/Frame 004284/0238 →
Assignment of Assignor's Interest
May 5, 1995
From: COOPER INDUSTRIES, INC.
To: COOPER CAMERON CORPORATION
Reel/Frame 007462/0622 →