Patent Assignment
Reel/Frame 004222/0527
Assignment of Assignors Interest.
Recorded: 1983-06-30
Pages: 1
Assignee
OIL STATES INDUSTRIES, INC.
A TX CORP., ARLINGTON, TEXAS
Covered Property
(1)
Closure for a Chain Entry Aperture
Patent:
4,567,840 →
Application:
06/509,365 →
Related Assignments
(2)
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 004283/0928 →
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 →