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发明名称
EXPANDABLE FACE MASK WITH ENGAGEABLE STIFFENING ELEMENT
摘要
申请公布号
EP2382016(A2)
申请公布日期
2011.11.02
申请号
EP20090837785
申请日期
2009.11.24
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
DUFFY, DEAN R.
分类号
A62B18/02;A62B9/00
主分类号
A62B18/02
代理机构
代理人
主权项
地址
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