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经营范围
发明名称
Gate valve
摘要
申请公布号
US2316933(A)
申请公布日期
1943.04.20
申请号
US19410388677
申请日期
1941.04.15
申请人
JOSEPH CHAPLIN
发明人
CHAPLIN JOSEPH
分类号
F16K3/20
主分类号
F16K3/20
代理机构
代理人
主权项
地址
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