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经营范围
发明名称
Check valve
摘要
申请公布号
US2744539(A)
申请公布日期
1956.05.08
申请号
US19520313535
申请日期
1952.10.07
申请人
KENYON INSTRUMENT COMPANY, INC.
发明人
JONES DAVID W.
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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