Tubular member rotating device,申请号US19560573726-传众专利搜索

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发明名称	Tubular member rotating device
摘要
申请公布号	US2862690(A)	申请公布日期	1958.12.02
申请号	US19560573726	申请日期	1956.03.26
申请人	MASON JAMES C	发明人	MASON JAMES C.
分类号	E21B19/16	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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