Improvements in or relating to combined calculating and writing machines,申请号GB19510006291-传众专利搜索

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发明名称	Improvements in or relating to combined calculating and writing machines
摘要
申请公布号	GB721437(A)	申请公布日期	1955.01.05
申请号	GB19510006291	申请日期	1951.03.15
申请人	LEO ARTHUR TRNKA VON WALDBERGEN	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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