Electric calculating apparatus,申请号GB19500031170-传众专利搜索

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发明名称	Electric calculating apparatus
摘要
申请公布号	GB701590(A)	申请公布日期	1953.12.30
申请号	GB19500031170	申请日期	1950.12.21
申请人	SIEMENS BROTHERS & CO. LIMITED	发明人	WARMAN BLOOMFIELD JAMES
分类号	H04M3/36	主分类号	H04M3/36
代理机构		代理人
主权项
地址

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