Apparatus for plunger lift control,申请号US19340746063-传众专利搜索

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发明名称	Apparatus for plunger lift control
摘要
申请公布号	US2018206(A)	申请公布日期	1935.10.22
申请号	US19340746063	申请日期	1934.09.29
申请人	HUGHES TOOL COMPANY	发明人	FLETCHER HAROLD W.
分类号	F04B47/12	主分类号	F04B47/12
代理机构		代理人
主权项
地址

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