Method and apparatus for mining,申请号GB19540001409-传众专利搜索

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发明名称	Method and apparatus for mining
摘要
申请公布号	GB750707(A)	申请公布日期	1956.06.20
申请号	GB19540001409	申请日期	1954.01.18
申请人	SUBMERGED COMBUSTION COMPANY OF AMERICA, INC.	发明人
分类号	E21B43/285	主分类号	E21B43/285
代理机构		代理人
主权项
地址

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