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Application filedfiledCritical
Priority to JP1976051013UpriorityCriticalpatent/JPS5552009Y2/ja
Publication of JPS52143514UpublicationCriticalpatent/JPS52143514U/ja
Priority to US05/937,511prioritypatent/US4203949A/en
Priority to US05/937,583prioritypatent/US4207661A/en
Application grantedgrantedCritical
Publication of JPS5552009Y2publicationCriticalpatent/JPS5552009Y2/ja