Apparatus for degasifying liquid in wells,申请号US19560564789-传众专利搜索

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发明名称	Apparatus for degasifying liquid in wells
摘要
申请公布号	US2800085(A)	申请公布日期	1957.07.23
申请号	US19560564789	申请日期	1956.02.10
申请人	HANSEN ALFRED E	发明人	HANSEN ALFRED E.
分类号	E21B43/38	主分类号	E21B43/38
代理机构		代理人
主权项
地址

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