(19)

(11)

EP 0 504 298 A1

(12)

(43) Date of publication: 23.09.1992 Bulletin 1992/39 (21) Application number: 91901624.0 (22) Date of filing: 07.12.1990

(51) International Patent Classification (IPC):  G02C 7/ 04( . ) G02C 7/ 06( . ) (86) International application number: PCT/US1990/007229 (87) International publication number: WO 1991/009336 (27.06.1991 Gazette 1991/14)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 07.12.1989 US 19890447186 07.12.1989 US 19890447201 (71) Applicant: SEIDNER, Leonard Brooklyn, NY 11217 (US)	(72) Inventor: SEIDNER, Leonard Brooklyn, NY 11217 (US) (74) Representative: Forattini, Amelia  c/o Internazionale Brevetti Ingg. ZINI, MARANESI & C. S.r.l. Piazza Castello 1 I-20121 Milano I-20121 Milano (IT)