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经营范围
发明名称
Dust Masks
摘要
申请公布号
GB2025773(A)
申请公布日期
1980.01.30
申请号
GB19790015334
申请日期
1979.05.02
申请人
AMERICAN CYANAMID CO
发明人
分类号
A62B18/02;A41D13/11;A61B19/00;(IPC1-7):A62B18/02
主分类号
A62B18/02
代理机构
代理人
主权项
地址
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