An improved method of and apparatus for piercing minerals by an oxy-fuel flame,申请号GB19540012262-传众专利搜索

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发明名称	An improved method of and apparatus for piercing minerals by an oxy-fuel flame
摘要
申请公布号	GB746210(A)	申请公布日期	1956.03.14
申请号	GB19540012262	申请日期	1954.04.28
申请人	UNION CARBIDE AND CARBON CORPORATION	发明人
分类号	E21B7/14	主分类号	E21B7/14
代理机构		代理人
主权项
地址

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