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发明名称
Balanced rotary four way valve
摘要
申请公布号
US2907349(A)
申请公布日期
1959.10.06
申请号
US19580748701
申请日期
1958.07.15
申请人
WHITE HOWARD T
发明人
WHITE HOWARD T.
分类号
E21D15/58;F15B13/04;F16K11/074;F16K11/085
主分类号
E21D15/58
代理机构
代理人
主权项
地址
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