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Individual
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Individual
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Priority to ES0061332UpriorityCriticalpatent/ES61332Y/en
Publication of ES61332UpublicationCriticalpatent/ES61332U/en
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Publication of ES61332YpublicationCriticalpatent/ES61332Y/en
Improved collapsible collar that is characterized by being formed by a plurality of biconvex flattened pieces of polygonal or circular contour, but endowed in the peripheral zone, with an appendix protruding by only one of its faces, and a through hole located diametrically opposite the appendix . (Machine-translation by Google Translate, not legally binding)