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Priority to JP6093379UpriorityCriticalpatent/JPS615643Y2/ja
Priority to US06/139,743prioritypatent/US4342058A/en
Priority to DE3014980Aprioritypatent/DE3014980C2/de
Priority to DE3050313Aprioritypatent/DE3050313C2/de
Publication of JPS55160551UpublicationCriticalpatent/JPS55160551U/ja
Application grantedgrantedCritical
Publication of JPS615643Y2publicationCriticalpatent/JPS615643Y2/ja