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Priority to JP9192575UpriorityCriticalpatent/JPS5437659Y2/ja
Priority to US05/701,204prioritypatent/US4048796A/en
Priority to CH838676Aprioritypatent/CH615561B/xx
Publication of JPS526664UpublicationCriticalpatent/JPS526664U/ja
Application grantedgrantedCritical
Publication of JPS5437659Y2publicationCriticalpatent/JPS5437659Y2/ja