IP Library › Assignment 004274/0332
Patent Assignment
Reel/Frame 004274/0332

Assignment of Assignors Interest.

Recorded: 1984-03-14 Pages: 2
Assignors
MATTHIAS, TERRY
Executed: 1984-02-13
BARR, JOHN D.
Executed: 1984-02-13
Assignee
Covered Property (1)
Drill Bit Cutter
Patent: 4,570,725 →
Application: 06/575,556 →
Related Assignments (6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. Mar 20, 1989
From: NL INDUSTRIES, INC.
To: REED TOOL COMPANY, LTD., A CORP. OF NORTHERN IRELAND
Reel/Frame 005031/0750 →
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 →
Corrective Assignment to Delete the Sixteen Patent Properties Indicated in Schedule "a" Erroneously Recorded in a Security Agreement on July 31, 1987 at Reel 4739 Frames 041-069. (See Record for Details) Nov 6, 1990
From: FARLEY, INC. (BY CHANGE OF NAME FROM FARLEY METALS, INC.)
To: NATWEST USA CREDIT CORP.
Reel/Frame 005554/0047 →
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 →