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经营范围
发明名称
Improvements in and relating to masks
摘要
申请公布号
GB684962(A)
申请公布日期
1952.12.31
申请号
GB19490032304
申请日期
1949.12.16
申请人
MAGDALENE SIGMUND
发明人
分类号
A41G7/00
主分类号
A41G7/00
代理机构
代理人
主权项
地址
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