SEAL ASSEMBLY,申请号GB19860017762-传众专利搜索

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发明名称	SEAL ASSEMBLY
摘要
申请公布号	GB8617762(D0)	申请公布日期	1986.08.28
申请号	GB19860017762	申请日期	1986.07.21
申请人	HUGHES TOOL CO	发明人
分类号	E21B17/06;E21B23/02;E21B43/10;(IPC1-7):E21B23/00	主分类号	E21B17/06
代理机构		代理人
主权项
地址

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