IP Library › Assignment 003948/0222
Patent Assignment
Reel/Frame 003948/0222

Assignment of Assignors Interest.

Recorded: 1982-02-10 Pages: 2
Assignors
FREDD, JOHN V.
Executed: 1982-02-05
SIZER, PHILLIP S.
Executed: 1982-02-05
CORP., OTIS ENGINEERING
Executed: 1982-02-05
Assignee
Covered Property (1)
Method and System for Well Testing
Patent: 31,313 →
Application: 06/311,638 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Nov 15, 1993
From: OTIS ENGINEERING CORPORATION
To: HALLIBURTON COMPANY
Reel/Frame 006779/0356 →
Assignment of Assignor's Interest Feb 18, 2019
From: SMIT, OBED JACOB
To: EDEN COLLECTION B.V.
Reel/Frame 048359/0007 →