CEMENT CONTROL VALVE DEVICE/SUB,申请号GB19860016055-传众专利搜索

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发明名称	CEMENT CONTROL VALVE DEVICE/SUB
摘要
申请公布号	GB8616055(D0)	申请公布日期	1986.08.06
申请号	GB19860016055	申请日期	1986.07.01
申请人	BODE, R E	发明人
分类号	E21B33/13;(IPC1-7):E21B33/13	主分类号	E21B33/13
代理机构		代理人
主权项
地址

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