Well cementing tool,申请号US19500185177-传众专利搜索

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发明名称	Well cementing tool
摘要
申请公布号	US2694452(A)	申请公布日期	1954.11.16
申请号	US19500185177	申请日期	1950.09.16
申请人	CECIL WARE	发明人	WARE CECIL
分类号	E21B33/134	主分类号	E21B33/134
代理机构		代理人
主权项
地址

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