Oil well apparatus,申请号US19330681079D-传众专利搜索

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发明名称	Oil well apparatus
摘要
申请公布号	US2009942(A)	申请公布日期	1935.07.30
申请号	US19330681079D	申请日期	1933.07.19
申请人	MOODY JOSEPH F	发明人	MOODY JOSEPH F.
分类号	E21B19/06	主分类号	E21B19/06
代理机构		代理人
主权项
地址

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