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摘要
申请公布号
US2279838(A)
申请公布日期
1942.04.14
申请号
US19400343571
申请日期
1940.07.02
申请人
OLIVER UNITED FILTERS INCORPORATED
发明人
OLIVER EDWIN LETTS
分类号
B01D29/00
主分类号
B01D29/00
代理机构
代理人
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