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Priority to JP1987140772UpriorityCriticalpatent/JPH0636751Y2/ja
Priority to KR2019880003534Uprioritypatent/KR900006744Y1/ko
Priority to FR8811924Aprioritypatent/FR2620312A1/fr
Publication of JPS6447223UpublicationCriticalpatent/JPS6447223U/ja
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Publication of JPH0636751Y2publicationCriticalpatent/JPH0636751Y2/ja