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发明名称
Device for maintaining quality of lubricating oil
摘要
申请公布号
US2980257(A)
申请公布日期
1961.04.18
申请号
US19570637245
申请日期
1957.01.30
申请人
PATON SIDNEY F
发明人
PATON SIDNEY F.
分类号
B01D35/06
主分类号
B01D35/06
代理机构
代理人
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地址
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