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Publication of ES200388A2publicationCriticalpatent/ES200388A2/en
Improvements introduced in the object of the main patent n 196.904, on improvements in filter cartridges of elastic rings, characterized in that the inner separation rings have a shape similar to that of the outer rings, with two diverging lateral wings, symmetrical to the plane of the ring and oriented towards the outside. (Machine-translation by Google Translate, not legally binding)
ES0200388A1951-05-081951-11-08Improvements in filter cartridges of elastic rings (Machine-translation by Google Translate, not legally binding)
ExpiredES200388A2
(en)