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Priority to JP1979047153UpriorityCriticalpatent/JPS608690Y2/ja
Priority to DE19803013680prioritypatent/DE3013680A1/de
Publication of JPS55147174UpublicationCriticalpatent/JPS55147174U/ja
Priority to US06/373,186prioritypatent/US4403750A/en
Application grantedgrantedCritical
Publication of JPS608690Y2publicationCriticalpatent/JPS608690Y2/ja