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Individual
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Individual
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Priority to ES0035490UpriorityCriticalpatent/ES35490Y/en
Publication of ES35490UpublicationCriticalpatent/ES35490U/en
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Publication of ES35490YpublicationCriticalpatent/ES35490Y/en
An improved frame for air filters, of the kind comprising a cylindrical crown covered with filter cloth, characterized in that the frame for this fabric is constituted by a plurality of independent pieces, constructed in wire, which presents the particularity being folded forming two symmetrical branches with zigzag pattern, the ends of these branches being locked by hook, agrafe or other means, to those of the adjacent branch, to together form an annular crown corresponding with another or others for the coating with the filtering fabric. (Machine-translation by Google Translate, not legally binding)
ES0035490U1953-03-281953-03-28
Improved cage for air filters
ExpiredES35490Y
(en)
Improvements made to knitting machines or looms to produce fancy designs and selected stitches with raised mesh effects, especially for the manufacture of stockings