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发明名称
Anordning ved kuleventil
摘要
申请公布号
NO996062(A)
申请公布日期
2001.06.11
申请号
NO19990006062
申请日期
1999.12.08
申请人
RING-O-VALVE NORGE AS
发明人
ROEED, FINN
分类号
E21B34/00;E21B34/04;F16K5/06;(IPC1-7):E21B34/00
主分类号
E21B34/00
代理机构
代理人
主权项
地址
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