Means for controlling well flow,申请号US19340741399-传众专利搜索

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发明名称	Means for controlling well flow
摘要
申请公布号	US2033563(A)	申请公布日期	1936.03.10
申请号	US19340741399	申请日期	1934.08.25
申请人	THE TECHNICRAFT ENGINEERING CORPORATION	发明人	WELLS WALTER T.
分类号	E21B34/10;E21B43/12	主分类号	E21B34/10
代理机构		代理人
主权项
地址

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