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Priority to JP5125877UpriorityCriticalpatent/JPS53147180U/ja
Priority to DE2817655Aprioritypatent/DE2817655C2/de
Priority to FR7812049Aprioritypatent/FR2388331A1/fr
Priority to CH441378Aprioritypatent/CH634715GA3/fr
Publication of JPS53147180UpublicationCriticalpatent/JPS53147180U/ja