(19)

(11)

EP 0 085 686 A1

(12)

(43) Date of publication: 17.08.1983 Bulletin 1983/33 (21) Application number: 82902341.0 (22) Date of filing: 05.08.1982

(51) International Patent Classification (IPC):  B64D 1/ 08( . ) B64D 17/ 52( . ) B64D 17/ 40( . ) (86) International application number: PCT/AU1982/000124 (87) International publication number: WO 1983/000671 (03.03.1983 Gazette 1983/06)

(84) Designated Contracting States: BE CH DE FR GB LI SE (30) Priority: 18.08.1981 AU 19810000310 (71) Applicant: THE COMMONWEALTH OF AUSTRALIA Canberra, Australian Capital Territory 2600 (AU)	(72) Inventor: BAILEY, Edwin Harold S.A. 5158 (AU) (74) Representative: Opperman, Stuart Richard, et al  Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)