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Priority to JP8341376UpriorityCriticalpatent/JPS5613043Y2/ja
Priority to DE19772728617prioritypatent/DE2728617C2/de
Publication of JPS532431UpublicationCriticalpatent/JPS532431U/ja
Application grantedgrantedCritical
Publication of JPS5613043Y2publicationCriticalpatent/JPS5613043Y2/ja