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Priority to JP1972068204UpriorityCriticalpatent/JPS5219448Y2/ja
Priority to US366765Aprioritypatent/US3872254A/en
Priority to US397538Aprioritypatent/US3904826A/en
Publication of JPS4927310UpublicationCriticalpatent/JPS4927310U/ja
Application grantedgrantedCritical
Publication of JPS5219448Y2publicationCriticalpatent/JPS5219448Y2/ja
