(19)

(11)

EP 0 650 626 A1

(12)

(43) Date of publication: 03.05.1995 Bulletin 1995/18 (21) Application number: 93916048.0 (22) Date of filing: 12.07.1993

(51) International Patent Classification (IPC):  G09B 3/ 08( . ) G09B 23/ 28( . ) G09B 7/ 02( . ) (86) International application number: PCT/GB1993/001451 (87) International publication number: WO 1994/001849 (20.01.1994 Gazette 1994/03)

(84) Designated Contracting States: CH DE FR GB IT LI NL SE (30) Priority: 13.07.1992 GB 19920014799 (71) Applicants: BAUM, Michael London SW7 3AL (GB) DANCE, David Roger London SW3 6JJ (GB)	(72) Inventors: BAUM, Michael London SW7 3AL (GB) DANCE, David Roger London SW3 6JJ (GB) (74) Representative: Skerrett, John Norton Haigh, et al  H.N. & W.S. SKERRETT Charles House 148/9 Great Charles Street Birmingham B3 3HT Birmingham B3 3HT (GB)