Protective mask

The protective mask comprises a first sealing cover, a second sealing cover and a filter element, the first sealing cover and the second sealing cover are each provided with an arch structure with aninward opening, and a first protective cavity covering the nose is formed in the inner side of the fi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GUO SHUNPING, XIONG YINPING, LI LIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES HUMAN NECESSITIES OUTERWEAR PROTECTIVE GARMENTS WEARING APPAREL
Online-Zugang:	Volltext bestellen
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