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发明名称
Improvements in or relating to hydraulic valves
摘要
申请公布号
GB705989(A)
申请公布日期
1954.03.24
申请号
GB19520014496
申请日期
1952.06.09
申请人
JOHN FOSTER;EDWARD BENJAMIN HEY
发明人
分类号
F15B13/04;F16K11/074
主分类号
F15B13/04
代理机构
代理人
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