(19)

(11)

EP 0 636 200 A1

(12)

(43) Date of publication: 01.02.1995 Bulletin 1995/05 (21) Application number: 93907661.0 (22) Date of filing: 06.04.1993

(51) International Patent Classification (IPC):  E04C 3/ 02( . ) (86) International application number: PCT/AU1993/000156 (87) International publication number: WO 1993/020302 (14.10.1993 Gazette 1993/25)

(84) Designated Contracting States: DE ES FR GB IT SE (30) Priority: 06.04.1992 AU 19920001737 (71) Applicant: BERGER LINTELS INTERNATIONAL PTY. LTD. Brisbane, QLD 4000 (AU)	(72) Inventor: BERGER, Victor Mansfield, QLD 4122 (AU) (74) Representative: Cheyne, John Robert Alexander Mackenzie  HASELTINE LAKE & CO. 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)