IP Library › Assignment 004023/0411
Patent Assignment
Reel/Frame 004023/0411

Assignment of Assignors Interest.

Recorded: 1982-06-14 Pages: 1
Assignor
MC KENZIE, LEE F.
Executed: 1982-06-04
Assignee
HUGHES TOOL COMPANY
P.O BOX 2539, A CORP. OF, HOUSTON, TEXAS, 77001
Covered Property (1)
Method of Cementing a Well Bore Using a Fluid Loss Additive
Patent: 4,413,681 →
Application: 06/388,334 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. Aug 8, 1988
From: HUGHES TOOL COMPANY
To: BAKER HUGHES INCORPORATED
Reel/Frame 005050/0861 →
Assignment of Assignors Interest. Sep 25, 1991
From: BAKER HUGHES INCORPORATED
To: BJ SERVICES COMPANY
Reel/Frame 005852/0291 →