(19)

(11)

EP 0 825 905 A1

(12)

(43) Date of publication: 04.03.1998 Bulletin 1998/10 (21) Application number: 96919723.0 (22) Date of filing: 08.05.1996

(51) International Patent Classification (IPC):  B07C 5/ 344( . ) G01R 31/ 36( . ) (86) International application number: PCT/EP1996/001940 (87) International publication number: WO 1996/035522 (14.11.1996 Gazette 1996/50)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 08.05.1995 NL 19951000317 (71) Applicant: Koninklijke PTT Nederland N.V. 9726 AE Groningen (NL)	(72) Inventors: KERLING, Frank, Martin NL-2263 XW Leidschendam (NL) DE HAAS, Jacobus, Johannes NL-2264 ME Leidschendam (NL) VEENSTRA, Wiebe NL-2742 AW Waddinxveen (NL)