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Priority to JP1980160047UpriorityCriticalpatent/JPH0132064Y2/ja
Priority to KR1019810001933Aprioritypatent/KR830006758A/ko
Priority to EP81302414Aprioritypatent/EP0041390A1/en
Publication of JPS5782377UpublicationCriticalpatent/JPS5782377U/ja
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Publication of JPH0132064Y2publicationCriticalpatent/JPH0132064Y2/ja