Assignment of Assignors Interest.

Recorded: 1981-06-15 Pages: 1

Assignor

VANN ROY R.

Executed: 1981-06-03

Assignee

GEO VANN, INC., A CORP. OF NM

P.O. BOX 4449, HOUSTON, TEXAS, 77210

Covered Property (1)

Method of Firing Perforating Gun and Simultaneously Recording Downhole Pressure

Application: 06/236,869 →

Related Assignments (2)

Other recorded transfers of the patent in this record — the chain of ownership.