(19)

(11)

EP 0 207 080 A1

(12)

(43) Date of publication: 07.01.1987 Bulletin 1987/02 (21) Application number: 85901324.0 (22) Date of filing: 29.03.1985

(51) International Patent Classification (IPC):  E02F 3/ 36( . ) (86) International application number: PCT/AU1985/000065 (87) International publication number: WO 1985/004440 (10.10.1985 Gazette 1985/22)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 29.03.1984 AU 19840004326 17.04.1984 AU 19840004618 (71) Applicants: SPENCER, Daryl John Alstonville, NSW 2477 (AU) SPENCER, Gary William Alstonville, NSW 2477 (AU)	(72) Inventors: SPENCER, Daryl John Alstonville, NSW 2477 (AU) SPENCER, Gary William Alstonville, NSW 2477 (AU)