(19)

(11)

EP 0 163 652 A1

(12)

(43) Date of publication: 11.12.1985 Bulletin 1985/50 (21) Application number: 84903156.0 (22) Date of filing: 20.08.1984

(51) International Patent Classification (IPC):  E04B 1/ 32( . ) E04B 7/ 10( . ) (86) International application number: PCT/AU1984/000160 (87) International publication number: WO 1985/002433 (06.06.1985 Gazette 1985/13)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 30.11.1983 AU 19830002622 (71) Applicants: MUSGRAVE, Ian Anthony Mansfield Queensland 4122 (AU) MUSGRAVE, Ruth Marie Mansfield Queensland 4122 (AU)	(72) Inventors: MUSGRAVE, Ian Anthony Mansfield Queensland 4122 (AU) MUSGRAVE, Ruth Marie Mansfield Queensland 4122 (AU)