Electric calculating machine,申请号US19470780501-传众专利搜索

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发明名称	Electric calculating machine
摘要
申请公布号	US2503932(A)	申请公布日期	1950.04.11
申请号	US19470780501	申请日期	1947.10.17
申请人	MARIE BARBEY RAYMOND ALPHONSE	发明人	BARBEY RAYMOND ALPHONSE MARIE
分类号	G06G7/34	主分类号	G06G7/34
代理机构		代理人
主权项
地址

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