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发明名称
Filter
摘要
申请公布号
US2207346(A)
申请公布日期
1940.07.09
申请号
US19380185545
申请日期
1938.01.18
申请人
UNION OIL COMPANY
发明人
HOPPER BASIL
分类号
B01D29/00;B01D35/00;B01D35/12
主分类号
B01D29/00
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代理人
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