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Priority to JP1987195545UpriorityCriticalpatent/JPH0512030Y2/ja
Publication of JPH0197933UpublicationCriticalpatent/JPH0197933U/ja
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Publication of JPH0512030Y2publicationCriticalpatent/JPH0512030Y2/ja
Device and method for detecting defect in corrugated cardboard sheet, device for eliminating defect in corrugated cardboard sheet, and device for manufacturing corrugated cardboard sheet