Calculator apparatus with electronically alterable key symbols,申请号US19800124418-传众专利搜索

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发明名称	Calculator apparatus with electronically alterable key symbols
摘要
申请公布号	USRE32040(E)	申请公布日期	1985.11.26
申请号	US19800124418	申请日期	1980.02.25
申请人		发明人
分类号	G06F3/023;H01H13/702;H03M11/02;H03M11/18	主分类号	G06F3/023
代理机构		代理人
主权项
地址

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