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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES1973193230UpriorityCriticalpatent/ES193230Y/en
Publication of ES193230UpublicationCriticalpatent/ES193230U/en
Application grantedgrantedCritical
Publication of ES193230YpublicationCriticalpatent/ES193230Y/en
Improved washer, characterized in that it has been adopted to constitute a curved circular shape, in such a way that the seat of the head of the screw is made on two opposite points of its surface, having also been provided with an angular cut, made at the lower edge, on which all the pressure exerted by the screw head itself is concentrated. (Machine-translation by Google Translate, not legally binding)