(19)

(11)

EP 0 465 618 A1

(12)

(43) Date of publication: 15.01.1992 Bulletin 1992/03 (21) Application number: 91902422.0 (22) Date of filing: 21.01.1991

(51) International Patent Classification (IPC):  A01C( . ) A01C 11/ 02( . ) (86) International application number: PCT/FI1991/000021 (87) International publication number: WO 1991/011098 (08.08.1991 Gazette 1991/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 29.01.1990 FI 19900000448 (71) Applicant: LÄNNEN TEHTAAT OY SF-27820 Iso-Vimma (FI)	(72) Inventor: MURMANN, Kim SF-29200 Harjavalta (FI) (74) Representative: Sorrell, Terence Gordon, et al  Fitzpatricks, Cardinal Court, 23, Thomas More Street London E1 9YY London E1 9YY (GB)