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Priority to JP5479881UpriorityCriticalpatent/JPS6325644Y2/ja
Priority to GB8206491Aprioritypatent/GB2099631B/en
Publication of JPS57167550UpublicationCriticalpatent/JPS57167550U/ja
Priority to HK82585Aprioritypatent/HK82585A/xx
Application grantedgrantedCritical
Publication of JPS6325644Y2publicationCriticalpatent/JPS6325644Y2/ja