Patent Assignment
Reel/Frame 004395/0162
Assignment of Assignors Interest.
Recorded: 1985-04-24
Pages: 1
Assignor
VITRINGA, FREDERICK A.
Executed: 1985-01-30
Assignee
GEOSOURCE INC., A DE CORP.
2700 SOUTH POST OAK BLVD.,, SUITE 2000,, HOUSTON,, TEXAS, 77056
Covered Property
(1)
Delta-Shaped Geophone Spring
Patent:
4,623,991 →
Application:
06/676,729 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Oct 16, 1989
From: G & H MANAGEMENT COMPANY
To: HALLIBURTON GEOPHYSICAL SERVICES, INC.
Reel/Frame 005252/0162 →
Change of Name November 13, 1988, Dealware
Oct 16, 1989
From: GEOSOURCE, INC.
To: G & H MANAGEMENT COMPANY
Reel/Frame 005252/0167 →
Merger
Nov 15, 1993
From: HALLIBURTON GEOPHYSICAL SERVICES, INC.
To: HALLIBURTON COMPANY
Reel/Frame 006777/0052 →
Assignment of Assignor's Interest
Mar 28, 1994
From: HALLIBURTON COMPANY
To: WESTERN ATLAS INTERNATIONAL, INC.
Reel/Frame 006970/0236 →
Assignment of Assignor's Interest
Aug 28, 1995
From: WESTERN ATLAS INTERNATIONAL, INC.
To: I/O EXPLORATION PRODUCTS, INC.
Reel/Frame 007644/0138 →
Corrected Assignment
Feb 23, 1996
From: WESTERN ATLAS INTERNATIONAL, INC.
To: I/O EXPLORATION PRODUCTS (U.S.A), INC.
Reel/Frame 007815/0841 →
Assignment of Assignor's Interest
Jun 8, 1998
From: I/O EXPLORATION PRODUCTS (U.S.A.), INC.
To: INPUT/OUTPUT, INC.
Reel/Frame 009245/0506 →