(19)

(11)

EP 0 172 195 A1

(12)

(43) Date of publication: 26.02.1986 Bulletin 1986/09 (21) Application number: 85900949.0 (22) Date of filing: 11.02.1985

(51) International Patent Classification (IPC):  H03K 5/ 00( . ) G08C 25/ 00( . ) H04L 25/ 08( . ) H04Q 9/ 14( . ) G06F 11/ 10( . ) H03K 5/ 153( . ) H04Q 9/ 00( . ) (86) International application number: PCT/AU1985/000022 (87) International publication number: WO 1985/003592 (15.08.1985 Gazette 1985/18)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 09.02.1984 AU 19840003552 (71) Applicants: GREATER UNION THEATRE SUPPLIES PTY. LIMITED Sydney, NSW 2000 (AU) STOREY, Phillip James Coogee, NSW 2034 (AU)	(72) Inventor: STOREY, Phillip James Coogee, NSW 2034 (AU) (74) Representative: Moore, Derek  Jensen & Son 70 Paul Street London EC2A 4NA London EC2A 4NA (GB)