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Individual
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Priority to ES1974200664UpriorityCriticalpatent/ES200664Y/en
Publication of ES200664UpublicationCriticalpatent/ES200664U/en
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Publication of ES200664YpublicationCriticalpatent/ES200664Y/en
A stairs for buildings, characterized essentially by a series of plates, obtained in artificial stone, vibrated concrete and/or prestressed, whose plates constitute successively the footprint, while the riser is only established by the hands three screws or devices of anchoring between steps, leaving these unaligned, in triangular arrangement, or in two longitudinal alignments to each step; leaving part of said screws embedded in the upper step plate and: crossing the lower step, which they hold by means of washers and nuts, successively. (Machine-translation by Google Translate, not legally binding)
ES1974200664U1974-02-201974-02-20
A LADDER FOR BUILDINGS.
ExpiredES200664Y
(en)
A procedure and a device for the conservation of natural or artificial stones or of concrete. (Machine-translation by Google Translate, not legally binding)
A procedure for the construction of ceilings and floors with beams and prefabricated trapezoid blocks (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of buildings through employment of inflatable elements. (Machine-translation by Google Translate, not legally binding)