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Priority to JP1977023302UpriorityCriticalpatent/JPS588991Y2/ja
Priority to US05/866,645prioritypatent/US4194607A/en
Priority to AU32316/78Aprioritypatent/AU509262B2/en
Publication of JPS53118950UpublicationCriticalpatent/JPS53118950U/ja
Application grantedgrantedCritical
Publication of JPS588991Y2publicationCriticalpatent/JPS588991Y2/ja