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Individual
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Individual
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Priority to ES0060360UpriorityCriticalpatent/ES60360Y/en
Publication of ES60360UpublicationCriticalpatent/ES60360U/en
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Publication of ES60360YpublicationCriticalpatent/ES60360Y/en
Electric map for school use, characterized in that an electric circuit is actuated internally by battery and by power supply of the network, for which purpose a stack of whose contact points is part of one of them has been arranged. thread directly to one of the poles of the lamp holder of the pilot, and from the other pole of said lampholder another thread whose terminal is equipped with a metal pointer for signaling in the metallic contacts of the questions. (Machine-translation by Google Translate, not legally binding)
ES0060360U1957-06-051957-06-05
Electric map for school use
ExpiredES60360Y
(en)