IP Library › Assignment 004816/0995
Patent Assignment
Reel/Frame 004816/0995

Assignment of Assignors Interest.

Recorded: 1988-01-04 Pages: 2
Assignors
WILSON, WILLIAM N.
Executed: 1987-12-11
MILES, LEON H.
Executed: 1987-12-11
BOYD, BRETT H.
Executed: 1987-12-11
CARPENTER, ROBERT B.
Executed: 1987-12-11
Assignee
Covered Property (1)
Cementing Oil and Gas Wells Using Converted Drilling Fluid
Patent: 4,883,125 →
Application: 07/131,878 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. Feb 5, 1988
From: MILES, LEON H.
To: ATLANTIC RICHFIELD COMPANY, A CORP. OF DE.
Reel/Frame 004831/0908 →
Assignment of Assignor's Interest Dec 17, 2001
From: ATLANTIC RICHFIELD COMPANY
To: PHILLIPS PETROLEUM COMPANY
Reel/Frame 012333/0329 →