(19)

(11)

EP 0 895 582 A1

(12)

(43) Date of publication: 10.02.1999 Bulletin 1999/06 (21) Application number: 97921056.0 (22) Date of filing: 24.04.1997

(51) International Patent Classification (IPC):  G01F 1/ 38( . ) G01L 11/ 00( . ) G01F 23/ 16( . ) G01N 9/ 26( . ) (86) International application number: PCT/SE1997/000690 (87) International publication number: WO 1997/040350 (30.10.1997 Gazette 1997/46)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 25.04.1996 SE 19960001581 (71) Applicant: Persson, Hans 182 75 Stocksund (SE)	(72) Inventor: Persson, Hans 182 75 Stocksund (SE) (74) Representative: Onn, Thorsten, et al  AB STOCKHOLMS PATENTBYRA Box 23101 104 35 Stockholm 104 35 Stockholm (SE)