Claims (1)
Claim 1 (Independent)
The ornamental design for a duckbill mask, as shown and described.
Full Description
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1. Duckbill mask
1 . 1 : Perspective
1 . 2 : Front
1 . 3 : Back
1 . 4 : Right
1 . 5 : Left
1 . 6 : Top
1 . 7 : Bottom
1 . 8 : Perspective view in an environment of use
A portion of the front face of the mask is transparent; in Fig. 1 . 8 , the broken lines depict a human head that forms no part of the claim; the shading lines in the reproductions represent contours only and do not illustrate an ornamentation or decoration on the surface of the product.
Citations
This patent cites (14)
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