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发明名称
Valve protecting device
摘要
申请公布号
US2010992(A)
申请公布日期
1935.08.13
申请号
US19300504722
申请日期
1930.12.26
申请人
J. H. MCEVOY & COMPANY
发明人
HOWARD JAMES H.
分类号
F16K3/26
主分类号
F16K3/26
代理机构
代理人
主权项
地址
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