Improvements in and relating to means for graduating record surfaces photographically,申请号GB19310001789-传众专利搜索

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发明名称	Improvements in and relating to means for graduating record surfaces photographically
摘要
申请公布号	GB359821(A)	申请公布日期	1931.10.29
申请号	GB19310001789	申请日期	1931.01.19
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	G01R13/30	主分类号	G01R13/30
代理机构		代理人
主权项
地址

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