(19)

(11)

EP 0 198 875 A1

(12)

(43) Date of publication: 29.10.1986 Bulletin 1986/44 (21) Application number: 85905194.0 (22) Date of filing: 17.10.1985

(51) International Patent Classification (IPC):  A01K 29/ 00( . ) A01K 13/ 00( . ) (86) International application number: PCT/AU1985/000252 (87) International publication number: WO 1986/002235 (24.04.1986 Gazette 1986/09)

(84) Designated Contracting States: FR (30) Priority: 17.10.1984 AU 19840007678 (71) Applicant: THE COMMONWEALTH INDUSTRIAL GASES LIMITED Chatswood, NSW 206710 (AU)	(72) Inventors: SCHONSTEIN, David, Norman Rose Bay, NSW 2029 (AU) AMERY, Malcolm, Ian Stanmore, NSW 2048 (AU) (74) Representative: Chameroy, Claude, et al  c/o Cabinet Malemont 42, avenue du Président Wilson F-75116 Paris F-75116 Paris (FR)