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Priority to JP1967050450UpriorityCriticalpatent/JPS463008Y1/ja
Priority to DE1771533Aprioritypatent/DE1771533B2/de
Priority to US734801Aprioritypatent/US3663383A/en
Priority to BE716107Dprioritypatent/BE716107A/xx
Priority to GB26696/68Aprioritypatent/GB1235176A/en
Publication of JPS463008Y1publicationCriticalpatent/JPS463008Y1/ja