METHOD AND APPARATUS FOR DEPOSITING CEMENT IN A WELL,申请号USD3461960-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR DEPOSITING CEMENT IN A WELL
摘要
申请公布号	US3461960(A)	申请公布日期	1969.08.19
申请号	USD3461960	申请日期	1967.05.08
申请人	ERNEST B. WILSON	发明人	ERNEST B. WILSON
分类号	E21B27/02;(IPC1-7):E21B33/13;E21B41/00	主分类号	E21B27/02
代理机构		代理人
主权项
地址

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