Tubing shoe valve,申请号US19350019521-传众专利搜索

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发明名称	Tubing shoe valve
摘要
申请公布号	US2049304(A)	申请公布日期	1936.07.28
申请号	US19350019521	申请日期	1935.05.02
申请人	LLOYD WILLIAM W	发明人	LLOYD WILLIAM W.
分类号	F04B53/10	主分类号	F04B53/10
代理机构		代理人
主权项
地址

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