(19)

(11)

EP 2 002 071 A2

(12)

(88) Date of publication A3: 30.10.2008 (43) Date of publication: 17.12.2008 Bulletin 2008/51 (21) Application number: 07753608.4 (22) Date of filing: 20.03.2007

(51) International Patent Classification (IPC):  E04H 1/00(2006.01) (86) International application number: PCT/US2007/006997 (87) International publication number: WO 2007/109306 (27.09.2007 Gazette 2007/39)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 20.03.2006 US 784520 P (71) Applicant: Project Frog, Inc. San Francisco, CA 94111 (US)	(72) Inventors: GOORE, Natan San Francisco, CA 94131 (US) KELLEY, Steven Orinda, CA 94563 (US) MILLER, Mark San Francisco, CA 94118 (US) (74) Representative: Zimmermann & Partner  Postfach 330 920 80069 München 80069 München (DE)