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摘要
申请公布号
US2238962(A)
申请公布日期
1941.04.22
申请号
US19380232508
申请日期
1938.09.30
申请人
YOUNG FRANK W
发明人
YOUNG FRANK W.
分类号
B01D33/00;B01D33/06
主分类号
B01D33/00
代理机构
代理人
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