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Priority to ES0033436UpriorityCriticalpatent/ES33436U/en
Publication of ES33436UpublicationCriticalpatent/ES33436U/en
New lag screw for carpentry and joinery, characterized in that its threading starts at a sharp point and is constituted by a tapered helical surface, increasing from head to head, and in such a way that in a cut made by the longitudinal axis of the lag screw Threaded represents a growing succession of elements, like truncated cones of inclined bases. (Machine-translation by Google Translate, not legally binding)
ES0033436U1952-11-151952-11-15New lag screw for carpentry and cabinetry (Machine-translation by Google Translate, not legally binding)
PendingES33436U
(en)