GUIDELINELESS REENTRY SYSTEM WITH RETRACTING ROLLERS,申请号GB19880026869-传众专利搜索

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发明名称	GUIDELINELESS REENTRY SYSTEM WITH RETRACTING ROLLERS
摘要
申请公布号	GB8826869(D0)	申请公布日期	1988.12.21
申请号	GB19880026869	申请日期	1988.11.17
申请人	VETCO GRAY INC	发明人
分类号	E21B33/038;E21B41/00	主分类号	E21B33/038
代理机构		代理人
主权项
地址

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