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Individual
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Individual
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Priority to ES83704ApriorityCriticalpatent/ES83704A2/es
Publication of ES83704A2publicationCriticalpatent/ES83704A2/es
ES83704A1922-12-041922-12-04Aparato de vigilancia y control de las paradas y disminuciones de velocidad de los ferrocarriles, tranvías y demás.
ExpiredES83704A2
(es)