Patent Assignment
Reel/Frame 004201/0614
Assignment of Assignors Interest.
Recorded: 1983-12-16
Pages: 1
Assignee
Covered Property
(1)
Additive Composition for Release of Stuck Drill Pipe
Patent:
4,436,638 →
Application:
06/288,110 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.