WELL HEAD SEALING GLAND,申请号RU19930037883-传众专利搜索

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发明名称	WELL HEAD SEALING GLAND
摘要
申请公布号	RU2093663(C1)	申请公布日期	1997.10.20
申请号	RU19930037883	申请日期	1993.07.23
申请人	CHELBIN VLADIMIR A	发明人	CHELBIN VLADIMIR A
分类号	E21B33/03;E21B33/06;(IPC1-7):E21B33/03	主分类号	E21B33/03
代理机构		代理人
主权项
地址

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