Patent Assignment
Reel/Frame 013640/0312
Assignment of Assignor's Interest
Recorded: 2003-01-07
Pages: 7
Assignors
ANDERSON, CLIFFORD J.
Executed: 2002-11-14
THICKE, BRIAN R.
Executed: 2002-11-14
SCHOETTLER, MICHAEL F.
Executed: 2002-11-14
Assignee
SELINGER, RICHARD
6711-92A AVENUE, EDMONTON, ALBERTA, T6B 0T5, CANADA
Covered Property
(1)
Method and Apparatus for Causing Pressure Variations in a Wellbore