(19)

(11)

EP 0 267 195 A1

(12)

(43) Date of publication: 18.05.1988 Bulletin 1988/20 (21) Application number: 86904731.0 (22) Date of filing: 18.07.1986

(51) International Patent Classification (IPC):  A01G 25/ 16( . ) G08B 21/ 20( . ) (86) International application number: PCT/AU1986/000199 (87) International publication number: WO 1987/000395 (29.01.1987 Gazette 1987/03)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 24.07.1985 AU 19850001619 (71) Applicant: INDUSTRIAL MONITORING SYSTEMS PTY. LTD. Osborne Park, W.A. 6017 (AU)	(72) Inventor: McDOWELL, Michael, Alan Leeming, W.A. 6155 (AU)