(19)

(11)

EP 0 623 218 A1

(12)

(43) Date of publication: 09.11.1994 Bulletin 1994/45 (21) Application number: 93902489.0 (22) Date of filing: 21.01.1993

(51) International Patent Classification (IPC):  G01R 31/ 12( . ) (86) International application number: PCT/HU1993/000002 (87) International publication number: WO 1993/014411 (22.07.1993 Gazette 1993/18)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 21.01.1992 HU 19920000183 (71) Applicant: BUDAPESTI MÜSZAKI EGYETEM H-1111 Budapest (HU)	(72) Inventor: N METH, Endre H-1026 Budapest (HU) (74) Representative: Patentanwälte Viering, Jentschura & Partner  Postfach 22 14 43 D-80504 München D-80504 München (DE)