(19)

(11)

EP 1 532 424 A2

(12)

(88) Date of publication A3: 19.06.2003 (43) Date of publication: 25.05.2005 Bulletin 2005/21 (21) Application number: 02757459.9 (22) Date of filing: 28.08.2002

(51) International Patent Classification (IPC)7: G01C 11/02 (86) International application number: PCT/US2002/027515 (87) International publication number: WO 2003/021187 (13.03.2003 Gazette 2003/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 27.08.2002 US 228863 P 27.08.2002 US 228863 (71) Applicant: Geovantage, Inc. Swapscott, MA 01907 (US)	(72) Inventors: KAIN, James, E. Shalimar, FL 32579 (US) PEVEAR, William, L. Marblehead, MA 01945 (US) (74) Representative: Kindermann, Manfred  Patentanwalt,Sperberweg 29 71032 Böblingen 71032 Böblingen (DE)