(19)

(11)

EP 0 623 264 A1

(12)

(43) Date of publication: 09.11.1994 Bulletin 1994/45 (21) Application number: 91916119.0 (22) Date of filing: 12.09.1991

(51) International Patent Classification (IPC):  H04H 60/ 04( . ) (86) International application number: PCT/GB1991/001564 (87) International publication number: WO 1993/005594 (18.03.1993 Gazette 1993/08)

(84) Designated Contracting States: DE FR GB IT (71) Applicant: GARTEN, Patrick Hebburn NE31 NY (GB)	(72) Inventor: GARTEN, Patrick Hebburn NE31 NY (GB)