IP Library › Assignment 004163/0686
Patent Assignment
Reel/Frame 004163/0686

Assignment of Assignors Interest.

Recorded: 1983-08-29 Pages: 2
Assignor
PERKINS, THOMAS K.
Executed: 1982-05-04
Assignee
Covered Property (1)
Wellbore Cathodic Protection
Patent: 4,413,679 →
Application: 06/375,842 →
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Dec 17, 2001
From: ATLANTIC RICHFIELD COMPANY
To: PHILLIPS PETROLEUM COMPANY
Reel/Frame 012333/0329 →