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经营范围
发明名称
Restricted butterfly valve
摘要
申请公布号
US2577657(A)
申请公布日期
1951.12.04
申请号
US19460672060
申请日期
1946.05.24
申请人
ASKANIA REGULATOR COMPANY
发明人
HOUK WARREN E.
分类号
F16K1/22
主分类号
F16K1/22
代理机构
代理人
主权项
地址
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