Patent Assignment
Reel/Frame 004062/0654
Assignment of Assignors Interest.
Recorded: 1981-11-22
Pages: 1
Assignors
RITTON, FREDERICK G.
Executed: 1982-11-08
STANFIELD, WILLIAM G.
Executed: 1982-11-08
LANDERS, DON B.
Executed: 1982-11-08
Assignee
OIL STATES INDUSTRIES, INC.
8000 SOUTH COOPER, A CORP OF TX, ARLINGTON,, TEXAS, 76011
Covered Property
(1)
Pull-Out Diaphragm Seal for Hollow Tubes
Patent:
4,376,597 →
Application:
06/240,563 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 16, 1984
From: OIL STATES INDUSTRIES INC.
To: CONTINENTAL EMSCO COMPANY
Reel/Frame 004284/0575 →
Merger and Change of Name. Effective October 1, 1993 in Delaware.
May 16, 1994
From: LTV ENERGY PRODUCTS COMPANY OR CONTINENTAL EMSCO COMPANY
To: CONTINENTAL EMSCO COMPANY
Reel/Frame 006987/0867 →
Security Agreement
Mar 14, 2001
From: OIL STATES; A-Z TERMINAL CORPORATION; CAPSTAR DRILLING, INC.; CECO HOLDINGS, INC.
To: CREDIT SUISSE FIRST BOSTON, AS U.S. COLLATERAL AGENT
Reel/Frame 011566/0720 →
Release of Security Interest
Nov 20, 2003
From: CREDIT SUISSE FIRST BOSTON
To: OIL STATES INTERNATIONAL, INC.
Reel/Frame 014146/0093 →