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Priority to JP1972115999UpriorityCriticalpatent/JPS5143030Y2/ja
Priority to US403159Aprioritypatent/US3892228A/en
Priority to DE19732350382prioritypatent/DE2350382C3/de
Publication of JPS4973286UpublicationCriticalpatent/JPS4973286U/ja
Application grantedgrantedCritical
Publication of JPS5143030Y2publicationCriticalpatent/JPS5143030Y2/ja