Patent Assignment
Reel/Frame 004715/0374
Assignment of Assignors Interest.
Recorded: 1987-05-19
Pages: 2
Assignors
OEHLER, HARRIS A.
Executed: 1987-03-31
MC LAURINE, HENRY C.
Executed: 1987-03-31
GRANTHAM, CHARLES K.
Executed: 1987-03-31
Assignee
MI DRILLING FLUIDS COMPANY
A TEXAS GENERAL PARTNERSHIP, HOUSTON, TEXAS
Covered Property
(1)
Amide Resin for Oil Based Drilling Fluids
Patent:
4,816,551 →
Application:
07/028,423 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.