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Priority to ES0218480ApriorityCriticalpatent/ES218480A2/en
Publication of ES218480A2publicationCriticalpatent/ES218480A2/en
Improvements introduced in the object of the main patent number 196820, granted by: ladder system of prefabricated rungs, characterized in that the prefabricated reinforced concrete pieces that form the rungs, are joined by the ends of the upper parts, according to a solid cross section, designed to hold the rung on one side; such a unión is made of metal ferrules that also serve, on one side, to receive the ends of the railing bars and on the other as holes for anchoring the step to the masonry. (Machine-translation by Google Translate, not legally binding)
ES0218480A1954-11-171954-11-17Prefabricated stairs ladder system (Machine-translation by Google Translate, not legally binding)
ExpiredES218480A2
(en)
Prefabricated reinforced or prestressed concrete elements for mounting windows, railings or other parts of a construction (Machine-translation by Google Translate, not legally binding)
New procedure for execution for the crection of armed cement streets in buildings in general (Machine-translation by Google Translate, not legally binding)