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经营范围
发明名称
Back water valve
摘要
申请公布号
US2282532(A)
申请公布日期
1942.05.12
申请号
US19400340238
申请日期
1940.06.13
申请人
J. A. ZURN MANUFACTURING COMPANY
发明人
SHENK ROBERT H.
分类号
F16K15/03
主分类号
F16K15/03
代理机构
代理人
主权项
地址
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