(19)

(11)

EP 1 419 573 A1

(12)

(43) Date of publication: 19.05.2004 Bulletin 2004/21 (21) Application number: 02767602.2 (22) Date of filing: 21.08.2002

(51) International Patent Classification (IPC)7: H03F 1/32, H03G 3/20, H03G 3/30 (86) International application number: PCT/GB2002/003824 (87) International publication number: WO 2003/019772 (06.03.2003 Gazette 2003/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 21.08.2001 GB 0120307 (71) Applicant: Ubinetics Limited Melbourn,Hertfordshire SG8 6DP (GB)	(72) Inventor: REEVE, John R. Hitchin,Hertfordshire SG5 1RL (GB) (74) Representative: Pratt, David Martin et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)