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Individual
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Individual
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Priority to ES727ApriorityCriticalpatent/ES727A2/es
Publication of ES727A2publicationCriticalpatent/ES727A2/es
Una lámpara eléctrica en que por medio de un arco o bóveda de materia refractaria, se fija y colora el arco voltaico saliendo entre los carbones sumergidos en esta misma materia.