Check valve for use in a tubular flow conductor,申请号US19620225283-传众专利搜索

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发明名称	Check valve for use in a tubular flow conductor
摘要
申请公布号	US3200837(A)	申请公布日期	1965.08.17
申请号	US19620225283	申请日期	1962.09.21
申请人	OTIS ENGINEERING CORPORATION	发明人	BROWN NORMAN F.
分类号	E21B34/00;E21B34/08	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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