发明名称 Unobtrusive personal air filtration device
摘要 A personal air-filtration device directing filtered air at the face without the use of a mask or a mouthpiece is described. The inventive device provides filtered air to the user without obstructing the user's mouth, thus allowing the user to talk and consume food and/or water while in operation.
申请公布号 US7543585(B2) 申请公布日期 2009.06.09
申请号 US20060546960 申请日期 2006.10.13
申请人 TORGERSON GARRETT DOUGLAS 发明人 TORGERSON GARRETT DOUGLAS
分类号 A62B18/08 主分类号 A62B18/08
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