Patent Assignment
Reel/Frame 026609/0079
Assignment of Assignor's Interest
Recorded: 2011-07-18
Received: 2011-07-18
Pages: 8
Assignor
PETRO HYDRAULIC LIFT SYSTEM, L.L.C.
Executed: 2011-07-18
Assignee
LUFKIN INDUSTRIES, INC.
601 S. RAGUET ST., LUFKIN, TX, 75902-0849, UNITED STATES
Covered Properties
(6)
Hydraulic Oil Well Pumping Apparatus
Application:
12/361,304 →
PCT:
PCTUS2009032248 ↗
Hydraulic Oil Well Pumping Apparatus
Application:
61/119,160 →
Hydraulic Oil Well Pumping Apparatus
Application:
61/024,020 →
Hydraulic Oil Well Pumping Apparatus
Application:
11/670,239 →
PCT:
PCTUS2007061478 ↗
Hydraulic Oil Well Pumping Apparatus
Application:
60/824,123 →
Hydraulic oil well pumping apparatus
Application:
60/764,481 →