(19)

(11)

EP 0 157 836 A1

(12)

(43) Date of publication: 16.10.1985 Bulletin 1985/42 (21) Application number: 84903612.0 (22) Date of filing: 24.09.1984

(51) International Patent Classification (IPC):  A22C 7/ 00( . ) (86) International application number: PCT/AU1984/000186 (87) International publication number: WO 1985/001186 (28.03.1985 Gazette 1985/08)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 22.09.1983 AU 19830001524 (71) Applicant: GIBSON, Royce Gordon Murwillumbah, NSW 2484 (AU)	(72) Inventor: GIBSON, Royce Gordon Murwillumbah, NSW 2484 (AU)