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发明名称
AN OVER-PRESSURE VALVE
摘要
申请公布号
PL154551(B1)
申请公布日期
1991.08.30
申请号
PL19860260846
申请日期
1986.07.28
申请人
发明人
分类号
E21D;E21D23/16;F16K;F16K17/04;(IPC1-7):F16K17/04
主分类号
E21D
代理机构
代理人
主权项
地址
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