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Priority to JP1977031381UpriorityCriticalpatent/JPS5753719Y2/ja
Priority to JP4029677Aprioritypatent/JPS53127092A/ja
Priority to US05/880,426prioritypatent/US4133584A/en
Publication of JPS53127092UpublicationCriticalpatent/JPS53127092U/ja
Application grantedgrantedCritical
Publication of JPS5753719Y2publicationCriticalpatent/JPS5753719Y2/ja