(19)

(11)

EP 0 169 881 A1

(12)

(43) Date of publication: 05.02.1986 Bulletin 1986/06 (21) Application number: 85900820.0 (22) Date of filing: 31.01.1985

(51) International Patent Classification (IPC):  G01C 7/ 06( . ) (86) International application number: PCT/SE1985/000047 (87) International publication number: WO 1985/003567 (15.08.1985 Gazette 1985/18)

(84) Designated Contracting States: AT BE DE FR GB LU NL SE (30) Priority: 01.02.1984 SE 19840000491 (71) Applicant: CARLSSON, Hakan S-417 40 Göteborg (SE)	(72) Inventor: CARLSSON, Hakan S-417 40 Göteborg (SE)