Microscopic revolving map,申请号US19390251150-传众专利搜索

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法人/股东/高管

发明名称	Microscopic revolving map
摘要
申请公布号	US2187947(A)	申请公布日期	1940.01.23
申请号	US19390251150	申请日期	1939.01.16
申请人	MARKS CHARLES A	发明人	MARKS CHARLES A.
分类号	G09B27/08	主分类号	G09B27/08
代理机构		代理人
主权项
地址

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