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Individual
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Individual
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Priority to ES0009899UpriorityCriticalpatent/ES9899Y/es
Publication of ES9899UpublicationCriticalpatent/ES9899U/es
Application grantedgrantedCritical
Publication of ES9899YpublicationCriticalpatent/ES9899Y/es
ES0009899U1944-04-141944-04-14Tintero-fuente provisto de pila para bañar la pluma, en la cual permanece invariable el nivel de tinta.
ExpiredES9899Y
(es)
Un aparato alimentado por batería, montado con válvulas calentadas directamente y el cual, para producir tensión anódica y de rejilla, se equipa de un vibrador