| 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.
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| 申请公布号 |
US6062221(A) |
申请公布日期 |
2000.05.16 |
| 申请号 |
US19970943757 |
申请日期 |
1997.10.03 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
BROSTROM, GERALD M.;BYRAM, DAVID C. |
| 分类号 |
A41D13/11;A62B18/08;(IPC1-7):A62B18/08 |
主分类号 |
A41D13/11 |
| 代理机构 |
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