(19)

(11)

EP 0 793 789 A1

(12)

(43) Date of publication: 10.09.1997 Bulletin 1997/37 (21) Application number: 95936638.0 (22) Date of filing: 07.11.1995

(51) International Patent Classification (IPC):  F21V 19/ 04( . ) F21V 23/ 02( . ) F21V 21/ 04( . ) (86) International application number: PCT/GB1995/002620 (87) International publication number: WO 1996/016296 (30.05.1996 Gazette 1996/25)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI LU NL SE (30) Priority: 23.11.1994 GB 19940023651 (71) Applicant: British Electric Lamps Limited Wimbledon, London SW19 (GB)	(72) Inventor: BERESFORDE, Andrew Wimbledon London SW19 4EN (GB) (74) Representative: Neobard, William John  Page White & Farrer 54 Doughty Street London WC1N 2LS London WC1N 2LS (GB)