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Priority to ES525957ApriorityCriticalpatent/ES8501241A1/en
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Publication of ES8501241A1publicationCriticalpatent/ES8501241A1/en
ES525957A1983-09-261983-09-26Improvements in the polarity inversor devices for miniature electric trains (Machine-translation by Google Translate, not legally binding)
ExpiredES8501241A1
(en)