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发明名称
Perfectionnements à la fabrication des filtres pour appareils respiratoires
摘要
申请公布号
FR861658(A)
申请公布日期
1941.02.14
申请号
FRD861658
申请日期
1939.08.04
申请人
发明人
CHEVALLIER HENRI MARIE JOSEPH
分类号
A62B23/00
主分类号
A62B23/00
代理机构
代理人
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