Open air port nasal breathing mask

Abstract

1. The name of the design product: open gas inlet nose and mouth breathing mask. 2. The use of the design product: for enriching gas, maintaining negative oxygen ion concentration at the nose and mouth. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. The submitted views are sufficient to express the design, and the top view and bottom view are omitted.

Images