Well control device,申请号US19320593993-传众专利搜索

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发明名称	Well control device
摘要
申请公布号	US1902540(A)	申请公布日期	1933.03.21
申请号	US19320593993	申请日期	1932.02.19
申请人	BROWN CICERO C	发明人	BROWN CICERO C.
分类号	E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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