(19)

(11)

EP 0 121 544 A1

(12)

(43) Date of publication: 17.10.1984 Bulletin 1984/42 (21) Application number: 83903226.0 (22) Date of filing: 07.10.1983

(51) International Patent Classification (IPC):  A61F 5/ 48( . ) G01N 27/ 12( . ) (86) International application number: PCT/NL1983/000037 (87) International publication number: WO 1984/001626 (26.04.1984 Gazette 1984/11)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 07.10.1982 NL 19820003901 (71) Applicant: BERGVELD, Piet NL-7531 LJ Enschede (NL)	(72) Inventor: BERGVELD, Piet NL-7531 LJ Enschede (NL) (74) Representative: Schumann, Bernard Herman Johan, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 NL-2517 GK Den Haag NL-2517 GK Den Haag (NL)