Patent Assignment
Reel/Frame 015073/0541
Assignment of Assignor's Interest
Recorded: 2004-08-19
Pages: 3
Assignors
MCCASKILL, JOHN
Executed: 2004-08-11
GOODIN, DAVID
Executed: 2004-08-11
GOODWIN, ROBERT
Executed: 2004-08-11
Assignee
POWER CHOKES, L.P.
P.O. BOX 164, CYPRESS, TEXAS, 77410
Covered Property
(1)
Hydraulic choke control system for underbalanced drilling
Application:
60/515,875 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Agreement Supplement
Nov 16, 2004
From: POWER CHOKES, L.P.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 015361/0234 →
Release of Patent Security Agreement Supplement
Sep 1, 2005
From: BANK OF AMERICA, N.A.
To: POWER WELL SERVICES, L.P.
Reel/Frame 016480/0377 →
Amendment to Patent Security Agreement Supplement
Sep 1, 2005
From: POWER WELL SERVICES, L.P.
To: BANK OF AMERICA, N.A.
Reel/Frame 016480/0398 →
Release of Patent Security Agreement Supplement
Aug 8, 2006
From: BANK OF AMERICA, N.A.
To: POWER WELL SERVICES, L.P.
Reel/Frame 018061/0840 →