(19)

(11)

EP 0 951 757 A1

(12)

(43) Date of publication: 27.10.1999 Bulletin 1999/43 (21) Application number: 97948647.0 (22) Date of filing: 22.12.1997

(51) International Patent Classification (IPC):  H04B 3/ 56( . ) (86) International application number: PCT/AU1997/000873 (87) International publication number: WO 1998/028858 (02.07.1998 Gazette 1998/26)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 24.12.1996 AU 1996PO04407 (71) Applicant: United Energy Ltd. Mount Waverley, VIC 3149 (AU)	(72) Inventor: STONE, Geoffrey, Ormiston Bayswater North, VIC 3153 (AU) (74) Representative: Lloyd, Patrick Alexander Desmond, et al  Reddie & Grose 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)