PRESSURE ENERGIZED/PRESSURE INTENSIFIED CASING SEAL,申请号GB19880021243-传众专利搜索

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发明名称	PRESSURE ENERGIZED/PRESSURE INTENSIFIED CASING SEAL
摘要
申请公布号	GB8821243(D0)	申请公布日期	1988.10.12
申请号	GB19880021243	申请日期	1988.09.09
申请人	FMC CORPORATION	发明人
分类号	E21B33/00;E21B33/03;E21B33/04;F16J15/46;(IPC1-7):E21B/	主分类号	E21B33/00
代理机构		代理人
主权项
地址

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