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Priority to JP1967042452UpriorityCriticalpatent/JPS4533639Y1/ja
Priority to US660990Aprioritypatent/US3523300A/en
Priority to DE19671785680prioritypatent/DE1785680A1/de
Priority to NL6711373Aprioritypatent/NL6711373A/xx
Priority to FR1554666Dprioritypatent/FR1554666A/fr
Publication of JPS4533639Y1publicationCriticalpatent/JPS4533639Y1/ja