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Priority to JP6601672UpriorityCriticalpatent/JPS5146506Y2/ja
Priority to DE19732320093prioritypatent/DE2320093A1/de
Priority to GB2303873Aprioritypatent/GB1434123A/en
Publication of JPS4929230UpublicationCriticalpatent/JPS4929230U/ja
Priority to US05/496,514prioritypatent/US3971517A/en
Application grantedgrantedCritical
Publication of JPS5146506Y2publicationCriticalpatent/JPS5146506Y2/ja