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Priority to JP1140973ApriorityCriticalpatent/JPS5648614B2/ja
Priority to US435950Aprioritypatent/US3918248A/en
Priority to CH106274Aprioritypatent/CH571582A5/xx
Publication of JPS49100341ApublicationCriticalpatent/JPS49100341A/ja
Publication of JPS5648614B2publicationCriticalpatent/JPS5648614B2/ja