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Priority to JP15180376UpriorityCriticalpatent/JPS5369232U/ja
Priority to US05/826,869prioritypatent/US4149782A/en
Priority to DE2739105Aprioritypatent/DE2739105C3/de
Priority to AT624677Aprioritypatent/AT357040B/de
Publication of JPS5369232UpublicationCriticalpatent/JPS5369232U/ja