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Expired
Application number
AU12431/33A
Filing date
Publication date
Application filedfiledCritical
Publication of AU1243133ApublicationCriticalpatent/AU1243133A/en
AU12431/33A1933-05-03Method for recording and reproducing vibrations and particularly sounds and device forthe realisation ofthis method
ExpiredAU1243133A
(en)