IP Library › Assignment 004083/0767
Patent Assignment
Reel/Frame 004083/0767

Assignment of Assignors Interest.

Recorded: 1982-12-28 Pages: 2
Assignor
VANN, ROY R.
Executed: 1982-12-16
Assignee
Covered Property (1)
Method and Apparatus for Firing a Perforating Gun and Simultaneously Recording the Downhole Pressure
Application: 06/453,994 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Aug 28, 1986
From: GEO VANN, INC.
To: VANN SYSTEMS INC.
Reel/Frame 004606/0291 →
Merger Aug 28, 1986
From: VANN SYSTEMS, INC.
To: HALLIBURTON COMPANY
Reel/Frame 004606/0300 →