(19)

(11)

EP 0 472 532 A1

(12)

(43) Date of publication: 04.03.1992 Bulletin 1992/10 (21) Application number: 90906236.0 (22) Date of filing: 25.04.1990

(51) International Patent Classification (IPC):  E04B( . ) E04B 9/ 04( . ) E04B 9/ 00( . ) (86) International application number: PCT/FI1990/000114 (87) International publication number: WO 1990/012934 (01.11.1990 Gazette 1990/25)

(84) Designated Contracting States: DE DK FR GB NL SE (30) Priority: 26.04.1989 FI 19890001971 (71) Applicant: AHLSTRÖM ERISTEET OY SF-5821 Hyvinkää (FI)	(72) Inventors: HYNNINEN, Kari SF-30100 Forssa (FI) JALONEN, Antti SF-05830 Hyvinkää (FI) LAAKSO, Simo SF-30100 Forssa (FI) SALO, Matti SF-31300 Tammela (FI) (74) Representative: Gilmour, David Cedric Franklyn, et al  POTTS, KERR & CO. 15 Hamilton Square Birkenhead Merseyside L41 6BR Birkenhead Merseyside L41 6BR (GB)