Patent Assignment
Reel/Frame 004805/0610
Assignment of Assignors Interest.
Recorded: 1987-12-16
Pages: 1
Covered Property
(1)
Annulus Cementing and Washout Systems for Wells
Patent:
4,856,592 →
Application:
07/134,628 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.