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发明名称
Valve construction
摘要
申请公布号
US2271419(A)
申请公布日期
1942.01.27
申请号
US19390286164
申请日期
1939.07.24
申请人
EARL M. ROBITSCHER
发明人
EGAN JOHN J.
分类号
F16K31/26
主分类号
F16K31/26
代理机构
代理人
主权项
地址
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