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经营范围
发明名称
Gravity filter and backwash control valve
摘要
申请公布号
US3298523(A)
申请公布日期
1967.01.17
申请号
US19640367405
申请日期
1964.05.14
申请人
THE EIMCO CORPORATION
发明人
JOHNSON WILLIAM H.
分类号
B01D24/48
主分类号
B01D24/48
代理机构
代理人
主权项
地址
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