(19)

(11)

EP 0 433 381 A1

(12)

(43) Date of publication: 26.06.1991 Bulletin 1991/26 (21) Application number: 89910677.0 (22) Date of filing: 07.09.1989

(51) International Patent Classification (IPC):  G03G 13/ 20( . ) H05B 3/ 00( . ) G03G 15/ 20( . ) (86) International application number: PCT/NL1989/000066 (87) International publication number: WO 1990/002977 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 08.09.1988 GB 19880021107 04.10.1988 GB 19880023258 04.01.1989 US 19890293431 (60) Divisional application: 94200756.8 / 0608965 (71) Applicant: SPECTRUM SCIENCES B.V. NL-2513 AC The Hague (NL)	(72) Inventors: LANDA, Benzion Alberta (CA) YACOUB, Naseem Herzelia (IL) PINHAS, Hanna Holon (IL) (74) Representative: de Bruijn, Leendert C., et al  Nederlandsch Octrooibureau P.O. Box 29720 NL-2502 LS Den Haag NL-2502 LS Den Haag (NL)