Improvements in and relating to calculating apparatus,申请号GB19370016996-传众专利搜索

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发明名称	Improvements in and relating to calculating apparatus
摘要
申请公布号	GB502560(A)	申请公布日期	1939.03.20
申请号	GB19370016996	申请日期	1937.06.18
申请人	ARTHUR LANNERT	发明人
分类号	G06E1/04	主分类号	G06E1/04
代理机构		代理人
主权项
地址

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