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Priority to JP8527572ApriorityCriticalpatent/JPS5234704B2/ja
Priority to IT54972/72Aprioritypatent/IT974269B/it
Priority to DE2263586Aprioritypatent/DE2263586A1/de
Publication of JPS4944161ApublicationCriticalpatent/JPS4944161A/ja
Publication of JPS5234704B2publicationCriticalpatent/JPS5234704B2/ja