Abacus for use with an overhead projector,申请号GB20040007417-传众专利搜索

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发明名称	Abacus for use with an overhead projector
摘要
申请公布号	GB2402524(A8)	申请公布日期	2006.11.02
申请号	GB20040007417	申请日期	2004.04.01
申请人	SAFE-T PRODUCTS INC	发明人	JOAN COTTER
分类号	G06C1/00;G09B19/02;(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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