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发明名称
BALL VALVE
摘要
申请公布号
GB1567735(A)
申请公布日期
1980.05.21
申请号
GB19780014798
申请日期
1978.04.14
申请人
ORR J
发明人
分类号
F16K5/06;F16K5/20;F16K27/06;(IPC1-7):F16K5/20
主分类号
F16K5/06
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代理人
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