Tête de contrôle avec vanne d'éruption pour puits d'exploitations pétrolifères,申请号FRD952038-传众专利搜索

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发明名称	Tête de contrôle avec vanne d'éruption pour puits d'exploitations pétrolifères
摘要
申请公布号	FR952038(A)	申请公布日期	1949.11.08
申请号	FRD952038	申请日期	1947.08.13
申请人	HYDRIL CORPORATION	发明人
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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