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Priority to IT06703790ApriorityCriticalpatent/IT1242460B/it
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Publication of IT9067037A1publicationCriticalpatent/IT9067037A1/it
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Publication of IT1242460BpublicationCriticalpatent/IT1242460B/it
Dispositivo di trasduzione dei rumori generati all'interno di un corpo, in particolare della voce, con sostanziale abbattimento dei rumori ambientali.