A FOLDING ABACUS,申请号KR19870014055U-传众专利搜索

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发明名称	A FOLDING ABACUS
摘要
申请公布号	KR900004783(Y1)	申请公布日期	1990.05.31
申请号	KR19870014055U	申请日期	1987.08.22
申请人	KIM BYUNG-CHUL	发明人	KIM BYUNG-CHUL
分类号	G06C1/00;(IPC1-7):G06C1/00	主分类号	G06C1/00
代理机构		代理人
主权项
地址

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