Instrument zum Untersuchen von Bohrloechern,申请号DED585664D-传众专利搜索

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发明名称	Instrument zum Untersuchen von Bohrloechern
摘要
申请公布号	DE585664(C)	申请公布日期	1933.10.12
申请号	DED585664D	申请日期	1930.08.30
申请人	SPERRY SUN WELL SURVEYING COMPANY	发明人
分类号	E21B47/022	主分类号	E21B47/022
代理机构		代理人
主权项
地址

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