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Priority to JP44009405ApriorityCriticalpatent/JPS492753B1/ja
Priority to NL696915258Aprioritypatent/NL146442B/xx
Priority to GB1289130Dprioritypatent/GB1289130A/en
Priority to SE14464/69Aprioritypatent/SE355001B/xx
Priority to FR6936548Aprioritypatent/FR2021492A1/fr
Priority to DE1953753Aprioritypatent/DE1953753C3/de
Publication of JPS492753B1publicationCriticalpatent/JPS492753B1/ja