(19)

(11)

EP 0 685 013 A1

(12)

(43) Date of publication: 06.12.1995 Bulletin 1995/49 (21) Application number: 94908205.0 (22) Date of filing: 15.02.1994

(51) International Patent Classification (IPC):  D06L 3/ 02( . ) D06M 10/ 00( . ) D06M 11/ 50( . ) D06M 101/ 02( . ) D06M 101/ 12( . ) D06L 3/ 04( . ) D06M 10/ 06( . ) D06M 101/ 00( . ) D06M 101/ 10( . ) (86) International application number: PCT/AU1994/000066 (87) International publication number: WO 1994/019526 (01.09.1994 Gazette 1994/20)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 16.02.1993 AU 1993PL07282 (71) Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Campbell, Australian Capital Territory 2601 (AU)	(72) Inventor: MILLINGTON, Keith, Reginald Belmont, VIC 3216 (AU) (74) Representative: Marshall, Monica Anne, et al  J.A. KEMP & CO. 14 South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)