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Priority to JP4923272UpriorityCriticalpatent/JPS5152016Y2/ja
Priority to DE19732301519prioritypatent/DE2301519A1/de
Publication of JPS498721UpublicationCriticalpatent/JPS498721U/ja
Application grantedgrantedCritical
Publication of JPS5152016Y2publicationCriticalpatent/JPS5152016Y2/ja