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Priority to ES123910UpriorityCriticalpatent/ES123910Y/en
Publication of ES123910UpublicationCriticalpatent/ES123910U/en
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Publication of ES123910YpublicationCriticalpatent/ES123910Y/en
New head for screws, characterized by the fact that the screw head. It has a groove of larger dimensions than normal, whether it is diametral or crossed, on top of it is coupled a sheath of the same shape, elastic material, which is the case that has a slot coinciding with the head of the screw although of smaller dimensions than the one of this one, which slot for being its walls of elastic material, allow the introduction of the tips of different unscrewing of different sizes. (Machine-translation by Google Translate, not legally binding)
ES123910U1966-08-161966-08-16
NEW HEAD FOR SCREWS.
ExpiredES123910Y
(en)