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Priority to JP1700872UpriorityCriticalpatent/JPS5212678Y2/ja
Priority to US331029Aprioritypatent/US3858313A/en
Publication of JPS4892348UpublicationCriticalpatent/JPS4892348U/ja
Application grantedgrantedCritical
Publication of JPS5212678Y2publicationCriticalpatent/JPS5212678Y2/ja