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Priority to ES1967133817UpriorityCriticalpatent/ES133817Y/en
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Publication of ES133817YpublicationCriticalpatent/ES133817Y/en
Improved quill, characterized essentially by the fact that one of its two flanges, comprises a complementary element arranged in parallel, forming a race, inside which is mounted an elastic ring, whose function lies in making the final hold of the thread, once the quill is filled. (Machine-translation by Google Translate, not legally binding)