(19)

(11)

EP 0 064 992 A1

(12)

(43) Date of publication: 24.11.1982 Bulletin 1982/47 (21) Application number: 81903089.0 (22) Date of filing: 13.11.1981

(51) International Patent Classification (IPC):  A61B 5/ 07( . ) A61F 11/ 04( . ) H01R 13/ 52( . ) H05K 7/ 10( . ) A61F 2/ 02( . ) A61N 1/ 02( . ) H04R 25/ 02( . ) A61N 1/ 375( . ) (86) International application number: PCT/AU1981/000163 (87) International publication number: WO 1982/001655 (27.05.1982 Gazette 1982/14)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 13.11.1980 AU 19800006484 (71) Applicant: THE COMMONWEALTH OF AUSTRALIA Care of the Secretary DEPARTMENT OF INDUSTRY AND COMMERCE Canberra A.C.T. 2600 (AU)	(72) Inventors: DALY, Christopher N. Bilgola Plateau N.S.W. 2107 (AU) MONEY, David Kerry Pennant Hills, N.S.W. 2120 (AU) PATRICK, James Finlay East Melbourne, Vic 3002 (AU)