Face Mask

1. Face mask

1 . 1 : Front

1 . 2 : Back

1 . 3 : Top

1 . 4 : Bottom

1 . 5 : Right

1 . 6 : Cross sectional

1 . 7 : Enlarged

1 . 8 : Enlarged

1 . 9 : Enlarged

The broken lines do not form part of the claimed designs; reproduction no. 1 . 6 is the cross sectional view cut along the A-A line in reproduction no. 1 . 1 ; reproduction no. 1 . 7 is the enlarged view of the B-B portion in reproduction no. 1 . 6 ; reproduction no. 1 . 8 is the enlarged view of the C-C portion in reproduction no. 1 . 6 ; reproduction no. 1 . 9 is the enlarged view of the D-D portion in reproduction no. 1 . 6 ; left views are omitted since they are mirror images of the right views, respectively.