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发明名称
Improvements in or relating to surgical face masks
摘要
申请公布号
GB893614(A)
申请公布日期
1962.04.11
申请号
GB19600004640
申请日期
1960.02.10
申请人
VERNON & COMPANY LIMITED
发明人
CRABTREE RONALD
分类号
A41D13/11
主分类号
A41D13/11
代理机构
代理人
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