RETRACTABLE SLIP ASSEMBLY,申请号GB19880021400-传众专利搜索

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发明名称	RETRACTABLE SLIP ASSEMBLY
摘要
申请公布号	GB8821400(D0)	申请公布日期	1988.10.12
申请号	GB19880021400	申请日期	1988.09.13
申请人	ARROW OIL TOOLS INC	发明人
分类号	E21B23/01;E21B33/1295;(IPC1-7):E21B/	主分类号	E21B23/01
代理机构		代理人
主权项
地址

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