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Priority to ES0064507UpriorityCriticalpatent/ES64507Y/en
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Publication of ES64507YpublicationCriticalpatent/ES64507Y/en
Improved vacuum cleaner, characterized in that it consists of a bellows constructed with elastic material that adopts a tubular configuration of substantially sinusoidal generatrix, its lateral surface presenting annular grooves transversely to the axis of said bellows, one of its bases being closed, and the other open and topped for a seat ring. (Machine-translation by Google Translate, not legally binding)
Procedure and apparatus for the formation of a necklace in a tube of elastic and deformable material (Machine-translation by Google Translate, not legally binding)