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经营范围
发明名称
Face mask
摘要
申请公布号
US1987922(A)
申请公布日期
1935.01.15
申请号
US19310580919
申请日期
1931.12.14
申请人
BLATT MAURICE L
发明人
BLATT MAURICE L.
分类号
A41D13/11
主分类号
A41D13/11
代理机构
代理人
主权项
地址
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