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Priority to JP1975105152UpriorityCriticalpatent/JPS574027Y2/ja
Priority to DE2628811Aprioritypatent/DE2628811C2/de
Priority to US05/701,025prioritypatent/US4106817A/en
Publication of JPS5220689UpublicationCriticalpatent/JPS5220689U/ja
Application grantedgrantedCritical
Publication of JPS574027Y2publicationCriticalpatent/JPS574027Y2/ja