(19)

(11)

EP 0 235 239 A1

(12)

(43) Date of publication: 09.09.1987 Bulletin 1987/37 (21) Application number: 86905441.0 (22) Date of filing: 02.09.1986

(51) International Patent Classification (IPC):  G10D 13/ 06( . ) (86) International application number: PCT/NL1986/000027 (87) International publication number: WO 1987/001497 (12.03.1987 Gazette 1987/06)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 02.09.1985 NL 19850002392 (71) Applicants: MOOIJMAN, Marinus Laurentius Leonardus NL-2761 TP Zevenhuizen (NL) VAN DER MEER, Johannes Hendricus Maria NL-2282 VG Rijswijk (NL)	(72) Inventor: van der Meer, Johannes Hendricus Maria NL-2282 VG Rijswijk (NL)