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摘要
申请公布号
US2343428(A)
申请公布日期
1944.03.07
申请号
US19410381119
申请日期
1941.02.28
申请人
PUROLATOR PRODUCTS, INC.
发明人
WELLS DONALD H.;GROOTE MELVIN DE
分类号
B01D39/08;B01D39/18
主分类号
B01D39/08
代理机构
代理人
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