Water shut-off method and composition for wells,申请号US19380240311-传众专利搜索

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发明名称	Water shut-off method and composition for wells
摘要
申请公布号	US2213039(A)	申请公布日期	1940.08.27
申请号	US19380240311	申请日期	1938.11.14
申请人	DAVID VERN W	发明人	DAVID VERN W.
分类号	C04B28/10;C09K8/14;E21B33/138	主分类号	C04B28/10
代理机构		代理人
主权项
地址

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