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Priority to ES1970161206UpriorityCriticalpatent/ES161206Y/en
Publication of ES161206UpublicationCriticalpatent/ES161206U/en
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Publication of ES161206YpublicationCriticalpatent/ES161206Y/en
New type of prefabricated staircase, which is essentially characterized by being built on modular bases, each formed by a structural element based on U-shaped steel sheet, whose straight central section, like the lateral or free branches, present longitudinal bends at their edges, which give them a u-section, having been foreseen in the straight central section, holes that will face the existing ones in a formative table of the tread of each rung, which will be anchored to the module by means of screws or similar, while on the ends of the free branches of each one of them, also affirm, by means of screws, two wooden pieces, formative of the handrail. (Machine-translation by Google Translate, not legally binding)
ES1970161206U1970-08-211970-08-21
NEW TYPE OF PREFABRICATED LADDER.
ExpiredES161206Y
(en)
The method of making structural boards in which veneer strips with narrow side edges, having a fiber direction parallel to the substrate, attached to each other are attached to the substrate.