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Priority to JP4759673ApriorityCriticalpatent/JPS557634B2/ja
Priority to DE19742407838prioritypatent/DE2407838C3/de
Priority to US443658Aprioritypatent/US3922666A/en
Publication of JPS49135597ApublicationCriticalpatent/JPS49135597A/ja
Publication of JPS557634B2publicationCriticalpatent/JPS557634B2/ja