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Priority to ES1973199059UpriorityCriticalpatent/ES199059Y/en
Publication of ES199059UpublicationCriticalpatent/ES199059U/en
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Publication of ES199059YpublicationCriticalpatent/ES199059Y/en
Improved hook, particularly applicable in construction, of the type that is constituted by an elbow plate that determines two arms, and essentially characterized by the fact that one of said arms, the one of introduction in the upright, undergoes a helical twist in the manner of a corkscrew, which prevents that can be detached from that amount but with an unscrewed movement, impossible to effect with the other arm of the grapple worked on the wall. (Machine-translation by Google Translate, not legally binding)