(19)

(11)

EP 0 626 026 A1

(12)

(43) Date of publication: 30.11.1994 Bulletin 1994/48 (21) Application number: 93903723.0 (22) Date of filing: 12.02.1993

(51) International Patent Classification (IPC):  E03D 9/ 03( . ) (86) International application number: PCT/AU1993/000060 (87) International publication number: WO 1993/016242 (19.08.1993 Gazette 1993/20)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 13.02.1992 AU 19920000881 (71) Applicant: NETA-BRYMAC (N.S.W.) PTY. LIMITED Kirrawee, NSW 2232 (AU)	(72) Inventor: REES, Gareth Coal Point, NSW 2283 (AU) (74) Representative: Beresford, Keith Denis Lewis, et al  BERESFORD & Co. 2-5 Warwick Court High Holborn London WC1R 5DJ London WC1R 5DJ (GB)