(19)

(11)

EP 0 605 519 A1

(12)

(43) Date of publication: 13.07.1994 Bulletin 1994/28 (21) Application number: 92919831.0 (22) Date of filing: 25.09.1992

(51) International Patent Classification (IPC):  C03B 23/ 025( . ) C03B 23/ 035( . ) C03B 27/ 044( . ) C03B 35/ 20( . ) C03B 23/ 03( . ) C03B 27/ 012( . ) C03B 29/ 08( . ) (86) International application number: PCT/FI1992/000257 (87) International publication number: WO 1993/006052 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 27.09.1991 FI 19910004550 (71) Applicant: Tamglass Engineering Oy SF-33730 Tampere (FI)	(72) Inventors: LAAKSO, Tapio SF-36110 Ruutana (FI) LEHTO, Esko SF-36240 Kangasala (FI) VEHMAS, Jukka SF-33420 Tampere (FI) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Maximilianstrasse 58 D-80538 München D-80538 München (DE)