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发明名称
BUTTERFLY VALVE
摘要
申请公布号
JPS5298231(A)
申请公布日期
1977.08.17
申请号
JP19760014848
申请日期
1976.02.16
申请人
HITACHI METALS LTD
发明人
MAEDA TAMOTSU
分类号
F16K1/226
主分类号
F16K1/226
代理机构
代理人
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