Face mask structure

A face mask structure has an upper mask portion, a middle mask portion, and a lower mask portion, which are formed integrally. The upper mask portion has an upper metal stripe disposed at a proper position thereof. The lower mask portion has a lower metal stripe disposed at a proper position thereof...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Huang, Po-Hsiung, Chu, Cheng-Kun, Chen, Hung-En, Lin, Jing-Tyr, Lee, Jen-Hsiung
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
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