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发明名称
Valve manufacture
摘要
申请公布号
US2169525(A)
申请公布日期
1939.08.15
申请号
US19370170000
申请日期
1937.10.20
申请人
CHAPMAN VALVE MANUFACTURING COMPANY
发明人
GOLDBERG DAVID D.
分类号
F16K5/16
主分类号
F16K5/16
代理机构
代理人
主权项
地址
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