Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Individual
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Individual
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Priority to ES411921ApriorityCriticalpatent/ES411921A1/es
Publication of ES411921A1publicationCriticalpatent/ES411921A1/es
ES411921A1973-02-221973-02-22Perfeccionamientos en los sistemas de reproduccion sonora para soportes provistos de surcos y similares.
ExpiredES411921A1
(es)