(19)

(11)

EP 0 609 267 A1

(12)

(43) Date of publication: 10.08.1994 Bulletin 1994/32 (21) Application number: 92920894.0 (22) Date of filing: 07.10.1992

(51) International Patent Classification (IPC):  A01K 1/ 015( . ) (86) International application number: PCT/GB1992/001824 (87) International publication number: WO 1993/006718 (15.04.1993 Gazette 1993/10)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE (30) Priority: 08.10.1991 GB 19910021285 30.07.1992 GB 19920016193 (71) Applicant: COFO LTD. Camberley, Surrey GU17 7ED (GB)	(72) Inventor: FOX, Richard Charles Bordon, Hants GU35 9BT (GB) (74) Representative: Harman, Michael Godfrey  Holmwood 37 Upper Park Road Camberley Surrey GU15 2EG Camberley Surrey GU15 2EG (GB)