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Individual
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Individual
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Priority to ES70967ApriorityCriticalpatent/ES70967A1/es
Publication of ES70967A1publicationCriticalpatent/ES70967A1/es
ES70967A1919-09-251919-09-25Perfeccionamientos en diafragmas para las cajas de sonoridad de gramófonos o fonógrafos, para teléfonos y sus similares.
ExpiredES70967A1
(es)