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发明名称
Perfectionnement aux masques à gaz
摘要
申请公布号
FR828785(A)
申请公布日期
1938.05.30
申请号
FRD828785
申请日期
1937.02.01
申请人
发明人
FREDERIC BOURCEY EMILE;ISIDORE BOURCEY RENE
分类号
A62B9/04
主分类号
A62B9/04
代理机构
代理人
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