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Priority to JP6038272UpriorityCriticalpatent/JPS5148348Y2/ja
Priority to US00339285Aprioritypatent/US3854517A/en
Publication of JPS4919922UpublicationCriticalpatent/JPS4919922U/ja
Application grantedgrantedCritical
Publication of JPS5148348Y2publicationCriticalpatent/JPS5148348Y2/ja