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发明名称
Duplex control valve device
摘要
申请公布号
US2450481(A)
申请公布日期
1948.10.05
申请号
US19430496868
申请日期
1943.07.31
申请人
THE WESTINGHOUSE AIR BRAKE COMPANY
发明人
MAY HARRY C.
分类号
F15B13/06
主分类号
F15B13/06
代理机构
代理人
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地址
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