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Priority to JP7604776UpriorityCriticalpatent/JPS5636503Y2/ja
Priority to US05/798,002prioritypatent/US4160447A/en
Publication of JPS52166387UpublicationCriticalpatent/JPS52166387U/ja
Application grantedgrantedCritical
Publication of JPS5636503Y2publicationCriticalpatent/JPS5636503Y2/ja