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Individual
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Priority to ES0322557ApriorityCriticalpatent/ES322557A1/en
Publication of ES322557A1publicationCriticalpatent/ES322557A1/en
A process for the manufacture of glass compositions for the manufacture of special fibers for protection against radiation, characterized in that a percentage of silica lower than 41 percent and lead oxide in a percentage greater than 50 percent are involved in said compositions. . (Machine-translation by Google Translate, not legally binding)
ES0322557A1966-02-031966-02-03Process of manufacturing glass compositions. (Machine-translation by Google Translate, not legally binding)
ExpiredES322557A1
(en)