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Priority to JP1972060168UpriorityCriticalpatent/JPS4919658U/ja
Priority to US00361327Aprioritypatent/US3849686A/en
Priority to NL7307164.Aprioritypatent/NL165881C/xx
Priority to DE2325979Aprioritypatent/DE2325979B2/de
Priority to GB2466973Aprioritypatent/GB1410887A/en
Publication of JPS4919658UpublicationCriticalpatent/JPS4919658U/ja