SEAL ASSEMBLY FOR WELL TOOLS,申请号GB19810011545-传众专利搜索

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发明名称	SEAL ASSEMBLY FOR WELL TOOLS
摘要
申请公布号	GB2083523(B)	申请公布日期	1984.07.04
申请号	GB19810011545	申请日期	1981.04.13
申请人	BROWN OIL TOOLS INC	发明人
分类号	E21B33/12;E21B33/16;E21B34/06;E21B34/12;E21B34/14;E21B41/00;E21B43/10;(IPC1-7):E21B33/14	主分类号	E21B33/12
代理机构		代理人
主权项
地址

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