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Priority to JP9553076UpriorityCriticalpatent/JPS5344311Y2/ja
Priority to DE2730691Aprioritypatent/DE2730691C2/de
Priority to AU26898/77Aprioritypatent/AU510723B2/en
Priority to CH875577Aprioritypatent/CH622180A5/de
Publication of JPS5313381UpublicationCriticalpatent/JPS5313381U/ja
Application grantedgrantedCritical
Publication of JPS5344311Y2publicationCriticalpatent/JPS5344311Y2/ja
Priority to US06/005,867prioritypatent/US4274415A/en