DRILLING GUIDANCE DEVICE,申请号SG19820000646-传众专利搜索

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发明名称	DRILLING GUIDANCE DEVICE
摘要
申请公布号	SG64682(G)	申请公布日期	1983.09.09
申请号	SG19820000646	申请日期	1982.12.28
申请人	STANDARD OIL COMPANY	发明人
分类号	E21B7/128;(IPC1-7):E21B7/12	主分类号	E21B7/128
代理机构		代理人
主权项
地址

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