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Priority to JP1981087125UpriorityCriticalpatent/JPS607238Y2/ja
Priority to DE8282302949Tprioritypatent/DE3268005D1/de
Priority to EP19820302949prioritypatent/EP0067648B1/en
Publication of JPS57199140UpublicationCriticalpatent/JPS57199140U/ja
Application grantedgrantedCritical
Publication of JPS607238Y2publicationCriticalpatent/JPS607238Y2/ja