THE ELECTRIC LEARN BOOK WHICH IS UNITED ELECTRIC TEXTBOOK, ELECTRIC NOTE AND VOICE RECORDING CONSTRUCTETC,申请号KR20000015244U-传众专利搜索

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发明名称	THE ELECTRIC LEARN BOOK WHICH IS UNITED ELECTRIC TEXTBOOK, ELECTRIC NOTE AND VOICE RECORDING CONSTRUCTETC
摘要
申请公布号	KR200208247(Y1)	申请公布日期	2000.12.15
申请号	KR20000015244U	申请日期	2000.05.30
申请人	CHANG, YOUNG CHEOL	发明人	CHANG, YOUNG CHEOL
分类号	G11B31/00;(IPC1-7):G11B31/00	主分类号	G11B31/00
代理机构		代理人
主权项
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