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Vidrios Ind De Prec S L
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Vidrios Ind De Prec S L
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Application filed by Vidrios Ind De Prec S LfiledCriticalVidrios Ind De Prec S L
Priority to ES0332317ApriorityCriticalpatent/ES332317A3/en
Publication of ES332317A3publicationCriticalpatent/ES332317A3/en
Improvements in the construction of membrane keys, of the type used in high vacuum installations, characterized in that a cylindrical body is provided with two diametrically opposed tubes, one of which is extended coaxially inside, and is attached to the bottom of said cylindrical body, the upper part of this body being closed by means of a sleeve bearing the closing and opening membrane which supports a rim formed at the upper end of said body. (Machine-translation by Google Translate, not legally binding)
ES0332317A1966-10-151966-10-15Improvements in the construction of membrane keys. (Machine-translation by Google Translate, not legally binding)
ExpiredES332317A3
(en)
Improvements in the construction of posts supporters or entities for wells and similars. (Machine-translation by Google Translate, not legally binding)