Improvements in or relating to inspection devices for detecting inaccuracies in the surface of road beds,申请号GB19290030504-传众专利搜索

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发明名称	Improvements in or relating to inspection devices for detecting inaccuracies in the surface of road beds
摘要
申请公布号	GB335393(A)	申请公布日期	1930.09.25
申请号	GB19290030504	申请日期	1929.10.08
申请人	SPERRY DEVELOPMENT COMPANY	发明人
分类号	G01C7/04	主分类号	G01C7/04
代理机构		代理人
主权项
地址

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