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Application filed by Rang K G Haus Moderner FussboefiledCriticalRang K G Haus Moderner Fussboe
Priority to FI871302ApriorityCriticalpatent/FI871302A/fi
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Publication of FI871302ApublicationCriticalpatent/FI871302A/fi
Saett att lufta mellanoerat medelst en i oerats trumhinna applicerbar ventilationstub, ventilationstub foer utfoerande av saettet jaemte anvaendning av en dylik ventilationstub.