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Priority to JP6001269UpriorityCriticalpatent/JPS487093Y1/ja
Priority to DE19702031341prioritypatent/DE2031341A1/de
Priority to US49722Aprioritypatent/US3659412A/en
Priority to GB1252547Dprioritypatent/GB1252547A/en
Priority to FR707023864Aprioritypatent/FR2049124B1/fr
Publication of JPS487093Y1publicationCriticalpatent/JPS487093Y1/ja