(19)

(11)

EP 1 697 760 A2

(12)

(43) Date of publication: 06.09.2006 Bulletin 2006/36 (21) Application number: 04818075.6 (22) Date of filing: 23.12.2004

(51) International Patent Classification (IPC):  G01S 13/04(2006.01) G01S 13/89(2006.01) G01S 13/00(2006.01) (86) International application number: PCT/US2004/043382 (87) International publication number: WO 2005/062943 (14.07.2005 Gazette 2005/28)

(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 MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 24.12.2003 US 532642 P (71) Applicant: Trex Enterprises Corporation San Diego, CA 92121-4339 (US)	(72) Inventors: LOUBERG, John San Diego, CA 92116 (US) IWLINKO, Vladimir San Diego, CA 92130 (US) CHEDESTER, Richard Whately, MA 01093 (US) (74) Representative: Carstairs, James Campbell  Forrester & Boehmert, Pettenkoferstrasse 20-22 80336 München 80336 München (DE)