Art and apparatus for oil well cementing,申请号US19290384361-传众专利搜索

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发明名称	Art and apparatus for oil well cementing
摘要
申请公布号	US1842106(A)	申请公布日期	1932.01.19
申请号	US19290384361	申请日期	1929.08.08
申请人	LYTLE CHARLES F	发明人	LYTLE CHARLES F.
分类号	E21B33/16	主分类号	E21B33/16
代理机构		代理人
主权项
地址

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