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发明名称
Valve indicator
摘要
申请公布号
US2140934(A)
申请公布日期
1938.12.20
申请号
US19370118809
申请日期
1937.01.02
申请人
CRANE CO.
发明人
DOPP CARL A.
分类号
F16K37/00
主分类号
F16K37/00
代理机构
代理人
主权项
地址
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