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Priority to JP1975163270UpriorityCriticalpatent/JPS5821218Y2/ja
Priority to DE19762613560prioritypatent/DE2613560C3/de
Publication of JPS5273637UpublicationCriticalpatent/JPS5273637U/ja
Application grantedgrantedCritical
Publication of JPS5821218Y2publicationCriticalpatent/JPS5821218Y2/ja