Process of degasifying coal and other carbonaceous material in situ,申请号US19310550009-传众专利搜索

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发明名称	Process of degasifying coal and other carbonaceous material in situ
摘要
申请公布号	US1867758(A)	申请公布日期	1932.07.19
申请号	US19310550009	申请日期	1931.07.10
申请人	LEO RANNEY	发明人	RANNEY LEO
分类号	E21B43/243	主分类号	E21B43/243
代理机构		代理人
主权项
地址

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