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Individual
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Individual
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Priority to ES0047931UpriorityCriticalpatent/ES47931Y/en
Publication of ES47931UpublicationCriticalpatent/ES47931U/en
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Publication of ES47931YpublicationCriticalpatent/ES47931Y/en
An improved elastic stopper, characterized in that its combined form of a regular cylinder discovered in its high base, which has as extension of the upper edges thereof a concave and concentric bowl to the stopper that moves away from it following a curvilinear path. (Machine-translation by Google Translate, not legally binding)