(19)

(11)

EP 0 607 273 A1

(12)

(43) Date of publication: 27.07.1994 Bulletin 1994/30 (21) Application number: 92921515.0 (22) Date of filing: 07.10.1992

(51) International Patent Classification (IPC):  A61F 4/ 00( . ) (86) International application number: PCT/US1992/008524 (87) International publication number: WO 1993/007726 (15.04.1993 Gazette 1993/10)

(84) Designated Contracting States: BE DE ES FR GB IE IT LU NL SE (30) Priority: 11.10.1991 US 19910774675 (71) Applicant: NEW ABILITIES SYSTEMS, INC. Palo Alto, CA 94303 (US)	(72) Inventors: FORTUNE, Daniel Palo Alto, CA 94306 (US) ORTIZ, John, E. East Palo Alto, CA 94306 (US) TRAN, Hien, Ngoc Santa Cruz, CA 95065 (US) (74) Representative: Crawford, Andrew Birkby, et al  A.A. THORNTON & CO. Northumberland House 303-306 High Holborn London WC1V 7LE London WC1V 7LE (GB)