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发明名称	WELL DRILLING MEANS
摘要
申请公布号	CA634535(A)	申请公布日期	1962.01.16
申请号	CAD634535	申请日期
申请人	HERMAN A. GEHRKE	发明人	HERMAN A. GEHRKE
分类号		主分类号
代理机构		代理人
主权项
地址

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