(19)

(11)

EP 0 258 281 A1

(12)

(43) Date of publication: 09.03.1988 Bulletin 1988/10 (21) Application number: 87900698.0 (22) Date of filing: 06.01.1987

(51) International Patent Classification (IPC):  E02F 3/ 30( . ) E02F 3/ 42( . ) E02F 9/ 12( . ) (86) International application number: PCT/NO1987/000001 (87) International publication number: WO 1987/004201 (16.07.1987 Gazette 1987/15)

(84) Designated Contracting States: CH DE FR GB IT LI SE (30) Priority: 06.01.1986 NO 19860000020 (71) Applicant: FOLLESDAL, Magne N-1181 Oslo 11 (NO)	(72) Inventor: FOLLESDAL, Magne N-1181 Oslo 11 (NO)