(19)

(11)

EP 0 321 465 A1

(12)

(43) Date of publication: 28.06.1989 Bulletin 1989/26 (21) Application number: 87904603.0 (22) Date of filing: 22.06.1987

(51) International Patent Classification (IPC):  A01K 85/ 00( . ) A01K 85/ 18( . ) (86) International application number: PCT/US1987/001519 (87) International publication number: WO 1988/010067 (29.12.1988 Gazette 1988/28)

(84) Designated Contracting States: DE FR GB IT (71) Applicant: THORNTON-DENENA INDUSTRIES Garland, TX 75043 (US)	(72) Inventor: PEARCE, Frank, G. Garland, TX 75043 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 D-22607 Hamburg D-22607 Hamburg (DE)