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Priority to ES1967133121UpriorityCriticalpatent/ES133121Y/en
Publication of ES133121UpublicationCriticalpatent/ES133121U/en
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Publication of ES133121YpublicationCriticalpatent/ES133121Y/en
Improved anchoring device, which does not require special tools or shape drills for assembly, characterized by a support-sheath, made of sheet metal embedded in the shape of a cylindrical box, in whose bottom there is a hole of sufficient diameter and whose walls are composed of two zones separated by longitudinal spans that determine two diametrically opposed grooves whose width narrows in the upper part by means of radial flanges or flanges that limit the piece. (Machine-translation by Google Translate, not legally binding)