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Priority to JP1976166873UpriorityCriticalpatent/JPS609476Y2/ja
Priority to GB3899877Aprioritypatent/GB1588267A/en
Priority to DE19772742701prioritypatent/DE2742701A1/de
Publication of JPS5382691UpublicationCriticalpatent/JPS5382691U/ja
Application grantedgrantedCritical
Publication of JPS609476Y2publicationCriticalpatent/JPS609476Y2/ja