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Priority to JP1985129827UpriorityCriticalpatent/JPH0335554Y2/ja
Priority to GB8616128Aprioritypatent/GB2180194B/en
Publication of JPS6238157UpublicationCriticalpatent/JPS6238157U/ja
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Publication of JPH0335554Y2publicationCriticalpatent/JPH0335554Y2/ja