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发明名称
Perfectionnements aux cartouches ou boîtes filtrantes pour fluides gazeux et arsines
摘要
申请公布号
FR44252(E)
申请公布日期
1934.12.13
申请号
FRD44252
申请日期
1933.05.20
申请人
ETABLISSEMENTS CHAMPION & COMPAGNIE
发明人
分类号
A62B23/00
主分类号
A62B23/00
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