HIGH-PRESSURE SWIVEL,申请号PL19800223366-传众专利搜索

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发明名称	HIGH-PRESSURE SWIVEL
摘要
申请公布号	PL124402(B1)	申请公布日期	1983.01.31
申请号	PL19800223366	申请日期	1980.04.10
申请人		发明人
分类号	E21B;E21B21/00;(IPC1-7):E21B21/00	主分类号	E21B
代理机构		代理人
主权项
地址

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