Method of recovering bitumen,申请号US19570678710-传众专利搜索

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发明名称	Method of recovering bitumen
摘要
申请公布号	US2906337(A)	申请公布日期	1959.09.29
申请号	US19570678710	申请日期	1957.08.16
申请人	THE PURE OIL COMPANY	发明人	HENNIG HARVEY
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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