(19)

(11)

EP 0 611 467 A1

(12)

(43) Date of publication: 24.08.1994 Bulletin 1994/34 (21) Application number: 93918242.0 (22) Date of filing: 13.07.1993

(51) International Patent Classification (IPC):  G09B 13/ 04( . ) (86) International application number: PCT/US1993/006768 (87) International publication number: WO 1994/001851 (20.01.1994 Gazette 1994/03)

(84) Designated Contracting States: FR (30) Priority: 13.07.1992 US 19920912874 (71) Applicant: TROUDET, Farideh Strongsville, OH 44136 (US)	(72) Inventor: TROUDET, Farideh Strongsville, OH 44136 (US) (74) Representative: Gudel, Diether, Dr., et al  Patentanwälte Dr. Weinhold, Dannenberg, Dr. Gudel, Schubert Siegfriedstrasse 8 D-80803 München D-80803 München (DE)