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发明名称
DROP-DOWN FACE MASK ASSEMBLY
摘要
An improved face mask that is retained by a carriage and harness assembly, thereby allowing the face mask to drop down from the face of the wearer.
申请公布号
CA2303108(C)
申请公布日期
2007.06.12
申请号
CA19982303108
申请日期
1998.02.05
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
BROSTROM, GERALD M.;BYRAM, DAVID C.
分类号
A62B18/08;A41D13/11
主分类号
A62B18/08
代理机构
代理人
主权项
地址
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