Patent Assignment
Reel/Frame 004099/0096
Assignment of Assignors Interest.
Recorded: 1983-02-22
Pages: 1
Assignor
SHORT, LOT W. JR.
Executed: 1983-02-14
Assignee
NL INDUSTRIES, INC., 1230 AVENUE OF THE AMERICAS, A CORP. OF N.J.
NEW YORK,, NEW YORK, 10020
Covered Property
(1)
Pdc Cutter and Bit
Patent:
4,538,690 →
Application:
06/468,668 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 5, 1990
From: NL INDUSTRIES, INC.
To: CAMCO, INCORPORATED, A CORP. OF TX
Reel/Frame 005370/0475 →
Merger
Jul 9, 1990
From: CAMCO, INCORPORATED, A CORP. OF TX.
To: CAMCO INTERNATIONAL INC., A CORP. OF DE
Reel/Frame 005366/0664 →
Merger
Oct 24, 2002
From: CAMCO INTERNATIONAL INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 013417/0342 →
Assignment of Assignor's Interest
Nov 22, 2002
From: SCHLUMBERGER TECHNOLOGY CORPORATION
To: REED HYCALOG OPERATING LP
Reel/Frame 013506/0905 →