(19)

(11)

EP 0 272 251 A1

(12)

(43) Date of publication: 29.06.1988 Bulletin 1988/26 (21) Application number: 85904782.0 (22) Date of filing: 27.09.1985

(51) International Patent Classification (IPC):  G01P 1/ 10( . ) G08G 1/ 0967( . ) G07C 5/ 08( . ) (86) International application number: PCT/AU1985/000235 (87) International publication number: WO 1987/002164 (09.04.1987 Gazette 1987/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: POWER, Colin Richard North Noble Park, VIC 3174 (AU)	(72) Inventor: POWER, Colin Richard North Noble Park, VIC 3174 (AU) (74) Representative: Cross, Rupert Edward Blount, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)