ABACUS CALCULATOR FOR TEACHING PRIMARY SCHOOL STUDENTS,申请号KR19840002851U-传众专利搜索

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发明名称	ABACUS CALCULATOR FOR TEACHING PRIMARY SCHOOL STUDENTS
摘要
申请公布号	KR850002816(Y1)	申请公布日期	1985.11.25
申请号	KR19840002851U	申请日期	1984.03.31
申请人	JON BONG-SUK	发明人	JON BONG-SUK
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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