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发明名称
Air filter
摘要
申请公布号
US2662609(A)
申请公布日期
1953.12.15
申请号
US19490116530
申请日期
1949.09.19
申请人
PRODUCTIVE INVENTIONS, INC.
发明人
KROHM FRED A.
分类号
B60S1/12
主分类号
B60S1/12
代理机构
代理人
主权项
地址
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