(19)

(11)

EP 0 110 894 A1

(12)

(43) Date of publication: 20.06.1984 Bulletin 1984/25 (21) Application number: 83901317.0 (22) Date of filing: 06.05.1983

(51) International Patent Classification (IPC):  A61F 13/ 15( . ) (86) International application number: PCT/AU1983/000056 (87) International publication number: WO 1983/004163 (08.12.1983 Gazette 1983/28)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 28.05.1982 AU 19820004208 (71) Applicants: BROWN, David Stanley Via Mudgeeraba, QLD 4213 (AU) BROWN, Mary Via Mudgeeraba, QLD 4213 (AU)	(72) Inventors: BROWN, David Stanley Via Mudgeeraba, QLD 4213 (AU) BROWN, Mary Via Mudgeeraba, QLD 4213 (AU) (74) Representative: Eyles, Christopher Thomas, et al  BATCHELLOR, KIRK & CO. 2 Pear Tree Court Farringdon Road London, EC1R 0DS London, EC1R 0DS (GB)