Controlled caving for solution mining methods,申请号US19580724401-传众专利搜索

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发明名称	Controlled caving for solution mining methods
摘要
申请公布号	US2919909(A)	申请公布日期	1960.01.05
申请号	US19580724401	申请日期	1958.03.27
申请人	FOOD MACHINERY AND CHEMICAL CORPORATION	发明人	RULE KENNETH C.
分类号	E21B43/28	主分类号	E21B43/28
代理机构		代理人
主权项
地址

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