Sucker-rod rotator,申请号US19290377854-传众专利搜索

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发明名称	Sucker-rod rotator
摘要
申请公布号	US1749722(A)	申请公布日期	1930.03.04
申请号	US19290377854	申请日期	1929.07.12
申请人	CLYDE STEVENS	发明人	STEVENS CLYDE
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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