(19)

(11)

EP 0 502 017 A1

(12)

(43) Date of publication: 09.09.1992 Bulletin 1992/37 (21) Application number: 90917068.0 (22) Date of filing: 16.11.1990

(51) International Patent Classification (IPC):  A61F 11/ 14( . ) (86) International application number: PCT/DK1990/000297 (87) International publication number: WO 1991/007153 (30.05.1991 Gazette 1991/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL SE (30) Priority: 17.11.1989 DK 19890005768 (71) Applicant: PANACOUSTICS A/S DK-9220 Aalborg Ost (DK)	(72) Inventor: RUBAK, Per DK-9240 Nibe (DK) (74) Representative: Skoett-Jensen, Knud  K. Skoett-Jensen Patentingenioerer A/S Lemmingvej 225 DK-8361 Hasselager DK-8361 Hasselager (DK)