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Individual
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Individual
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Priority to ES1973189020UpriorityCriticalpatent/ES189020Y/en
Publication of ES189020UpublicationCriticalpatent/ES189020U/en
Application grantedgrantedCritical
Publication of ES189020YpublicationCriticalpatent/ES189020Y/en
Some sprung covers with springs, of variable capacity, characterized by being constituted by two sheets or rigid covers, duly covered on both sides by a lining of flexible material and of great resistance, which extends backwards, without continuity solution, covering also on both sides a series of springs and a piece of cover that embraces them externally and that constitutes the spine of the set. (Machine-translation by Google Translate, not legally binding)
ES1973189020U1973-02-231973-02-23
SOME FASTENING CAPS WITH VARIABLE CAPACITY SPRINGS.
ExpiredES189020Y
(en)