(19)

(11)

EP 0 757 740 A1

(12)

(43) Date of publication: 12.02.1997 Bulletin 1997/07 (21) Application number: 95916774.0 (22) Date of filing: 26.04.1995

(51) International Patent Classification (IPC):  E04C 5/ 01( . ) E04C 5/ 02( . ) (86) International application number: PCT/GB1995/000956 (87) International publication number: WO 1995/029307 (02.11.1995 Gazette 1995/47)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 26.04.1994 GB 19940008268 (71) Applicant: SOUTH BANK UNIVERSITY ENTERPRISES LIMITED London SW1 0AA (GB)	(72) Inventor: AYRA, Chanakya London NW1 5RH (GB) (74) Representative: Lucas, Brian Ronald  Lucas & Co. 135 Westhall Road Warlingham Surrey CR6 9HJ Warlingham Surrey CR6 9HJ (GB)