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Priority to JP15674875UpriorityCriticalpatent/JPS5269211U/ja
Priority to GB15095/76Aprioritypatent/GB1549445A/en
Priority to US05/677,790prioritypatent/US4089488A/en
Priority to DE19762617446prioritypatent/DE2617446A1/de
Priority to FR7612141Aprioritypatent/FR2308574A1/fr
Publication of JPS5269211UpublicationCriticalpatent/JPS5269211U/ja