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经营范围
发明名称
Face mask
摘要
申请公布号
US2507705(A)
申请公布日期
1950.05.16
申请号
US19470782271
申请日期
1947.10.27
申请人
GADDINI NORMAN E
发明人
GADDINI NORMAN E.
分类号
A62B18/04
主分类号
A62B18/04
代理机构
代理人
主权项
地址
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