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经营范围
发明名称
Gate valve
摘要
申请公布号
US2380647(A)
申请公布日期
1945.07.31
申请号
US19430486727
申请日期
1943.05.12
申请人
HENDERSON JOHN L
发明人
HENDERSON JOHN L.
分类号
F16K3/06
主分类号
F16K3/06
代理机构
代理人
主权项
地址
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