IP Library Assignment 004889/0828
Patent Assignment
Reel/Frame 004889/0828

Assignment of Assignors Interest.

Recorded: 1988-06-06 Pages: 2
Assignor
PERKINS, THOMAS K.
Executed: 1988-03-18
Assignee
ATLANTIC RICHFIELD COMPANY
A CORP. OF DE., LOS ANGELES, CALIFORNIA
Covered Property (1)
Method for Completing Wells in Unconsolidated Formations
Patent: 4,830,110 →
Application: 07/171,709 →
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 →