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Priority to JP15193576UpriorityCriticalpatent/JPS576939Y2/ja
Priority to US05/847,814prioritypatent/US4176524A/en
Priority to CA290,106Aprioritypatent/CA1090441A/en
Priority to DE2750165Aprioritypatent/DE2750165C3/de
Publication of JPS5368290UpublicationCriticalpatent/JPS5368290U/ja
Application grantedgrantedCritical
Publication of JPS576939Y2publicationCriticalpatent/JPS576939Y2/ja