(19)

(11)

EP 0 165 939 A1

(12)

(43) Date of publication: 02.01.1986 Bulletin 1986/01 (21) Application number: 84904184.0 (22) Date of filing: 21.11.1984

(51) International Patent Classification (IPC):  A01D 57/ 20( . ) A01D 61/ 00( . ) (86) International application number: PCT/NO1984/000053 (87) International publication number: WO 1985/002315 (06.06.1985 Gazette 1985/13)

(84) Designated Contracting States: AT BE DE FR GB NL SE (30) Priority: 23.11.1983 NO 19830004290 (71) Applicant: Stokland, Sigmund N-3080 Holmestrand (NO)	(72) Inventor: Stokland, Sigmund N-3080 Holmestrand (NO) (74) Representative: Needle, Jacqueline, et al  PAGE, WHITE & FARRER 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)