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经营范围
发明名称
Perfectionnements aux masques
摘要
申请公布号
FR811168(A)
申请公布日期
1937.04.08
申请号
FRD811168
申请日期
1935.12.28
申请人
MICHEL ET MARCHAL
发明人
分类号
A62B18/02
主分类号
A62B18/02
代理机构
代理人
主权项
地址
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