Oil well rig,申请号US19360092032-传众专利搜索

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发明名称	Oil well rig
摘要
申请公布号	US2059333(A)	申请公布日期	1936.11.03
申请号	US19360092032	申请日期	1936.07.22
申请人	FULTZ WILFORD B	发明人	FULTZ WILFORD B.
分类号	E21B1/02	主分类号	E21B1/02
代理机构		代理人
主权项
地址

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