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Priority to JP1975154456UpriorityCriticalpatent/JPS562253Y2/ja
Priority to DE2649556Aprioritypatent/DE2649556C2/de
Priority to US05/738,736prioritypatent/US4161678A/en
Publication of JPS5266914UpublicationCriticalpatent/JPS5266914U/ja
Application grantedgrantedCritical
Publication of JPS562253Y2publicationCriticalpatent/JPS562253Y2/ja