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发明名称
Perfectionnements aux embases de masques respiratoires
摘要
申请公布号
FR829633(A)
申请公布日期
1938.07.01
申请号
FRD829633
申请日期
1937.02.26
申请人
发明人
CHARLES DUNOIS,
分类号
A62B9/04
主分类号
A62B9/04
代理机构
代理人
主权项
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