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Priority to JP1971002037UpriorityCriticalpatent/JPS5037917Y2/ja
Priority to US00199669Aprioritypatent/US3738057A/en
Publication of JPS471295UpublicationCriticalpatent/JPS471295U/ja
Application grantedgrantedCritical
Publication of JPS5037917Y2publicationCriticalpatent/JPS5037917Y2/ja