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发明名称
Filtre colloïdal pour masques ou autres appareils respiratoires, destinés à mettre à l'abri des suspensions nuisibles ou toxiques
摘要
申请公布号
FR42532(E)
申请公布日期
1933.08.04
申请号
FRD42532
申请日期
1932.03.24
申请人
发明人
JAUBERT GEORGE-FRANCOIS
分类号
A62B23/02
主分类号
A62B23/02
代理机构
代理人
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