(19)

(11)

EP 1 866 656 A2

(12)

(43) Date of publication: 19.12.2007 Bulletin 2007/51 (21) Application number: 06736932.2 (22) Date of filing: 03.03.2006

(51) International Patent Classification (IPC):  G01R 31/02(2006.01) (86) International application number: PCT/US2006/007687 (87) International publication number: WO 2006/096543 (14.09.2006 Gazette 2006/37)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 08.03.2005 US 659808 P (71) Applicant: Wells-CTI, Llc. Vancouver, WA 98683 (US)	(72) Inventors: LOPEZ, Christopher, A. Phoenix, AZ 85086 (US) DENHEYER, Brian, J. Portland, OR 97221 (US) (74) Representative: Fleuchaus, Michael A. et al Melchiorstrasse 42 81479 München 81479 München (DE)