HAND HELD ADDING MACHINE,申请号USD3556398-传众专利搜索

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发明名称	HAND HELD ADDING MACHINE
摘要
申请公布号	US3556398(A)	申请公布日期	1971.01.19
申请号	USD3556398	申请日期	1969.03.27
申请人	EDWARD C. WALSH	发明人	EDWARD C. WALSH
分类号	G06C1/00;(IPC1-7):G06C27/00;G06F15/18	主分类号	G06C1/00
代理机构		代理人
主权项
地址

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