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Individual
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Individual
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Priority to ES0051799UpriorityCriticalpatent/ES51799Y/en
Publication of ES51799UpublicationCriticalpatent/ES51799U/en
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Publication of ES51799YpublicationCriticalpatent/ES51799Y/en
Improved joist, characterized in that internally it presents a linkage, to which are electrically welded double forks or double stirrups. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in terrestrial or hydraulic works constituted by obstacles of claraboya (Machine-translation by Google Translate, not legally binding)