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Individual
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Individual
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Priority to ES0080298UpriorityCriticalpatent/ES80298Y/en
Publication of ES80298UpublicationCriticalpatent/ES80298U/en
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Publication of ES80298YpublicationCriticalpatent/ES80298Y/en
Torsion washer for wood screws, characterized by carrying a drill, of square section, in its center for the tight coupling of the head of the screw also of square section. (Machine-translation by Google Translate, not legally binding)
ES0080298U1960-04-201960-04-20
Torsion washer for wood screws
ExpiredES80298Y
(en)