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Priority to JP7500572UpriorityCriticalpatent/JPS4936510U/ja
Priority to DE2331643Aprioritypatent/DE2331643C3/de
Priority to GB3011673Aprioritypatent/GB1417897A/en
Priority to US397802Aprioritypatent/US3916953A/en
Publication of JPS4936510UpublicationCriticalpatent/JPS4936510U/ja