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经营范围
发明名称
Valve construction
摘要
申请公布号
US2857927(A)
申请公布日期
1958.10.28
申请号
US19540450764
申请日期
1954.08.18
申请人
发明人
分类号
A01J11/16;B01F5/06
主分类号
A01J11/16
代理机构
代理人
主权项
地址
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