(19)

(11)

EP 0 135 515 A1

(12)

(43) Date of publication: 03.04.1985 Bulletin 1985/14 (21) Application number: 84900599.0 (22) Date of filing: 01.02.1984

(51) International Patent Classification (IPC):  A22C 25/ 02( . ) (86) International application number: PCT/AU1984/000018 (87) International publication number: WO 1984/003024 (16.08.1984 Gazette 1984/20)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 01.02.1983 AU 19830007846 (71) Applicants: CAMM, Robert Frederick The Patch, VIC 3792 (AU) JAMES, Ian Kenneth Rocklea, QLD 4106 (AU) ROBSON, Gary Francis Chapel Hill, QLD 4069 (AU)	(72) Inventor: JAMES, Ian Kenneth Rocklea, QLD 4106 (AU) (74) Representative: Stephens, Michael John  M.J. Stephens & Co. 46 Tavistock Place Plymouth PL4 8AX Plymouth PL4 8AX (GB)