Patent Assignment
Reel/Frame 004579/0056
Assignment of Assignors Interest.
Recorded: 1986-06-03
Pages: 2
Assignors
TENG, CHUAN C.
Executed: 1986-05-29
CHAPELLE, RENE A.
Executed: 1986-05-30
BLACKLAWS, JOHN E.
Executed: 1986-05-29
MC COMSEY, LEE E.
Executed: 1986-05-27
Assignee
DAILEY PETROLEUM SERVICES CORP., A CORP. OF DE.
2507 NORTH FRAZIER STREET, ONE LAWRENCE CENTRE, CONROE, TEXAS, 77305
Covered Property
(1)
Mechanical Directional Drilling Jar with Swivel Means
Patent:
4,715,454 →
Application:
06/870,087 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Feb 18, 1992
From: DAILEY PETROLEUM SERVICES CORP., A DE CORP.
To: FIRST INTERSTATE BANK OF TEXAS, N.A.
Reel/Frame 006036/0516 →
Assignment of Assignor's Interest
Jul 22, 1996
From: DAILEY PETROLEUM SERVICES CORP.
To: DAILEY PETROLEUM SERVICES CORP.
Reel/Frame 008040/0824 →
Security Agreement
Feb 9, 1998
From: DAILEY PETROLEUM SERVICES, CORP. (DEBTOR); WELLS FARGO BANK (TEXAS), N.A.
To: WELLS FARGO BANK (TEXAS), N.A.
Reel/Frame 008943/0314 →
Assignment of Assignor's Interest
Jul 18, 2000
From: DAILEY INTERNATIONAL, INC.
To: WEATHERFORD U.S. L.P.
Reel/Frame 010977/0150 →