(19)

(11)

EP 0 597 880 A1

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(43) Date of publication: 25.05.1994 Bulletin 1994/21 (21) Application number: 92914469.0 (22) Date of filing: 11.06.1992

(51) International Patent Classification (IPC):  G02C 13/ 00( . ) (86) International application number: PCT/US1992/004945 (87) International publication number: WO 1993/025932 (23.12.1993 Gazette 1993/30)

(84) Designated Contracting States: GR MC (71) Applicant: BECKRICH, Mary B. Minnetonka, MN 55343 (US)	(72) Inventor: BECKRICH, Mary B. Minnetonka, MN 55343 (US) (74) Representative: Fry, Alan Valentine, et al  FRY HEATH & SPENCE The Old College 53 High Street Horley Surrey RH6 7BN Horley Surrey RH6 7BN (GB)