(19)

(11)

EP 0 447 403 A1

(12)

(43) Date of publication: 25.09.1991 Bulletin 1991/39 (21) Application number: 89910944.0 (22) Date of filing: 04.10.1989

(51) International Patent Classification (IPC):  G03B 21/ 132( . ) G03B 23/ 00( . ) (86) International application number: PCT/NO1989/000102 (87) International publication number: WO 1990/004208 (19.04.1990 Gazette 1990/09)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.10.1988 NO 19880004439 (71) Applicant: HJELMELAND, Egil Kare N-6800 Forde (NO)	(72) Inventor: HJELMELAND, Egil Kare N-6800 Forde (NO) (74) Representative: Hennig, Peter  Josef-Görres-Platz 20 D-56068 Koblenz D-56068 Koblenz (DE)