IP Library › Assignment 003830/0886
Patent Assignment
Reel/Frame 003830/0886

Assignment of Assignors Interest.

Recorded: 1980-12-08 Pages: 2
Assignor
PRINGLE RONALD E.
Executed: 1980-12-03
Assignee
CAMCO, INCORPORATED
A CORP. OF TX., HOUSTON, TEXAS
Covered Property (1)
Fluid Displacement Well Safety Valve
Patent: 4,373,587 →
Application: 06/214,069 →
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Jul 9, 1990
From: CAMCO, INCORPORATED, A CORP. OF TX.
To: CAMCO INTERNATIONAL INC., A CORP. OF DE
Reel/Frame 005366/0664 →