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发明名称
Perfectionnements aux masques à gaz
摘要
申请公布号
FR859868(A)
申请公布日期
1940.12.31
申请号
FRD859868
申请日期
1939.05.31
申请人
发明人
HOUZELLE LUCIEN
分类号
A62B18/10
主分类号
A62B18/10
代理机构
代理人
主权项
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