(19)

(11)

EP 0 639 267 A1

(12)

(43) Date of publication: 22.02.1995 Bulletin 1995/08 (21) Application number: 93910511.0 (22) Date of filing: 07.05.1993

(51) International Patent Classification (IPC):  F21V 9/ 06( . ) H01J 61/ 02( . ) G01M 3/ 38( . ) (86) International application number: PCT/SE1993/000403 (87) International publication number: WO 1993/023730 (25.11.1993 Gazette 1993/28)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 08.05.1992 SE 19920001461 (71) Applicant: LABINO PATENT AB S-890 23 Själevad (SE)	(72) Inventor: BERGKVIST, Lars, A. S-890 23 Själevad (SE) (74) Representative: Örtenblad, Bertil Tore, et al  Noréns Patentbyra AB Box 27034 S-102 51 Stockholm S-102 51 Stockholm (SE)