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Priority to JP1974147627UpriorityCriticalpatent/JPS5443500Y2/ja
Priority to US05/624,183prioritypatent/US4032137A/en
Publication of JPS5173040UpublicationCriticalpatent/JPS5173040U/ja
Application grantedgrantedCritical
Publication of JPS5443500Y2publicationCriticalpatent/JPS5443500Y2/ja