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发明名称
GATE VALVES
摘要
申请公布号
GB2031121(B)
申请公布日期
1982.10.27
申请号
GB19790031138
申请日期
1979.09.07
申请人
BRITISH STEEL CORP
发明人
分类号
F16K31/50;F16K31/60;(IPC1-7):F16K31/60
主分类号
F16K31/50
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代理人
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