(19)

(11)

EP 0 072 818 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82900507.0 (22) Date of filing: 11.02.1982

(51) International Patent Classification (IPC):  G01K 5/ 48( . ) G01K 13/ 02( . ) G01K 11/ 00( . ) (86) International application number: PCT/NO1982/000005 (87) International publication number: WO 1982/002769 (19.08.1982 Gazette 1982/20)

(84) Designated Contracting States: DE FR GB SE (30) Priority: 11.02.1981 NO 19810000458 (71) Applicant: LAMVIK, Magne N-7000 Trondheim (NO)	(72) Inventor: LAMVIK, Magne N-7000 Trondheim (NO)