WELL DEPTH MEASUREMENT DEVICE,申请号SU19772461248-传众专利搜索

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发明名称	WELL DEPTH MEASUREMENT DEVICE
摘要
申请公布号	SU838091(A1)	申请公布日期	1981.06.15
申请号	SU19772461248	申请日期	1977.03.09
申请人	GIRIK SERGEJ A,SU	发明人	GIRIK SERGEJ A,SU
分类号	E21B47/04;(IPC1-7):E21B47/04	主分类号	E21B47/04
代理机构		代理人
主权项
地址

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