Selective plugging of oil wells,申请号US19550480757-传众专利搜索

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发明名称	Selective plugging of oil wells
摘要
申请公布号	US2805720(A)	申请公布日期	1957.09.10
申请号	US19550480757	申请日期	1955.01.10
申请人	WIEGAND FREDERICK W	发明人	WIEGAND FREDERICK W.
分类号	C09K8/502	主分类号	C09K8/502
代理机构		代理人
主权项
地址

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