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发明名称
Valve
摘要
申请公布号
US2420785(A)
申请公布日期
1947.05.20
申请号
US19430497643
申请日期
1943.08.06
申请人
H. W. ELLIOTT
发明人
LORRAINE DAVID G.
分类号
F16K5/04;F16K5/18
主分类号
F16K5/04
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代理人
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