Calculator,申请号US19560568937-传众专利搜索

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发明名称	Calculator
摘要
申请公布号	US2819526(A)	申请公布日期	1958.01.14
申请号	US19560568937	申请日期	1956.03.01
申请人	RADIO CORPORATION OF AMERICA	发明人	JR. GEORGE HAROLD BROWN,
分类号	G06G1/00	主分类号	G06G1/00
代理机构		代理人
主权项
地址

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