Mining of sulfur using heated water and an impervious barrier,申请号US19540454385-传众专利搜索

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发明名称	Mining of sulfur using heated water and an impervious barrier
摘要
申请公布号	US2784954(A)	申请公布日期	1957.03.12
申请号	US19540454385	申请日期	1954.09.07
申请人	ESSO RESEARCH AND ENGINEERING COMPANY	发明人	ILFREY WILLIAM T.
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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