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发明名称
Visible flow device
摘要
申请公布号
US1813349(A)
申请公布日期
1931.07.07
申请号
US19300441270
申请日期
1930.04.03
申请人
THE DAYTON PUMP AND MANUFACTURING COMPANY
发明人
EICKMEYER EARL E.
分类号
G01P13/00
主分类号
G01P13/00
代理机构
代理人
主权项
地址
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