发明名称 Mouth and nose safety device for e.g. laboratories, has watertight, but respiration-active membrane or other synthetic inlay
摘要 <p>The safety device has a watertight, but respiration-active membrane or other synthetic inlay. The membrane has a porous or homogeneous structure, and has a charcoal filter layer.</p>
申请公布号 DE10322323(A1) 申请公布日期 2004.12.09
申请号 DE2003122323 申请日期 2003.05.17
申请人 KUENSTLE, WERNER 发明人 KUENSTLE, WERNER
分类号 A41D13/11;(IPC1-7):A41D13/11 主分类号 A41D13/11
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