METHOD OF DRILLING WELLS IN ROCK,申请号USD3485301-传众专利搜索

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发明名称	METHOD OF DRILLING WELLS IN ROCK
摘要
申请公布号	US3485301(A)	申请公布日期	1969.12.23
申请号	USD3485301	申请日期	1969.04.14
申请人	MISSION MFG. CO.	发明人	VERNON G. STEWART
分类号	E21B1/00;E21B10/40;(IPC1-7):E21B1/00;E21B9/22	主分类号	E21B1/00
代理机构		代理人
主权项
地址

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