Steam actuated automatic rotary drill,申请号US19290373371-传众专利搜索

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发明名称	Steam actuated automatic rotary drill
摘要
申请公布号	US1810247(A)	申请公布日期	1931.06.16
申请号	US19290373371	申请日期	1929.06.24
申请人	PHILIP JONES	发明人	JONES PHILIP
分类号	E21B19/08	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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