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EP 1 866 831 A1

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(43) Date of publication: 19.12.2007 Bulletin 2007/51 (21) Application number: 04814909.0 (22) Date of filing: 17.12.2004

(51) International Patent Classification (IPC):  G06K 7/10(2006.01) (86) International application number: PCT/US2004/042777 (87) International publication number: WO 2006/065250 (22.06.2006 Gazette 2006/25)

(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 (71) Applicant: Tripletail Ventures, INC. Cedar Rapids IA 52402-3229 (US)	(72) Inventors: MELICK, Bruce D. Cedar Rapids, IA 52402-3229 (US) SNYDER, David M. Cedar Rapids, IA 52402-3229 (US) BAYCH, Leslie D. Cedar Rapids, IA 52402-3229 (US) (74) Representative: Maggs, Michael Norman et al Kilburn & Strode 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)