Perfectionnements apportés aux dispositifs pour perforer les parois de puits,申请号FRD1139343-传众专利搜索

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发明名称	Perfectionnements apportés aux dispositifs pour perforer les parois de puits
摘要
申请公布号	FR1139343(A)	申请公布日期	1957.06.27
申请号	FRD1139343	申请日期	1955.09.30
申请人	WELEX JET SERVICES, INC.	发明人
分类号	E21B43/118	主分类号	E21B43/118
代理机构		代理人
主权项
地址

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