Tubing blow-out preventer,申请号US19360111877-传众专利搜索

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发明名称	Tubing blow-out preventer
摘要
申请公布号	US2129531(A)	申请公布日期	1938.09.06
申请号	US19360111877	申请日期	1936.11.20
申请人	ABEGG & REINHOLD COMPANY	发明人	MCLAGAN GEORGE E.
分类号	E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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