Drill,申请号US19340748355-传众专利搜索

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法人/股东/高管

发明名称	Drill
摘要
申请公布号	US2014909(A)	申请公布日期	1935.09.17
申请号	US19340748355	申请日期	1934.10.15
申请人	PEARCE WILLIAM L	发明人	PEARCE WILLIAM L.
分类号	E21B10/26;E21B10/60	主分类号	E21B10/26
代理机构		代理人
主权项
地址

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