(19)

(11)

EP 0 081 570 A1

(12)

(43) Date of publication: 22.06.1983 Bulletin 1983/25 (21) Application number: 82902236.0 (22) Date of filing: 08.06.1982

(51) International Patent Classification (IPC):  A01H 1/ 00( . ) A01K 67/ 027( . ) (86) International application number: PCT/US1982/000780 (87) International publication number: WO 1982/004443 (23.12.1982 Gazette 1982/30)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 12.06.1981 US 19810273239 (71) Applicant: OHIO UNIVERSITY Athens, OH 45701 (US)	(72) Inventors: WAGNER, Thomas E. Athens, OH 45701 (US) HOPPE, Peter C. Bar Harbor, ME 04609 (US) (74) Representative: Modiano, Guido, Dr.-Ing., et al  Modiano & Associati S.r.l. Via Meravigli, 16 I-20123 Milano I-20123 Milano (IT)