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发明名称
DUST MASKS
摘要
申请公布号
GB2025773(B)
申请公布日期
1982.12.01
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
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代理人
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