The ornamental design for a surfacepattern for a nose and mouth air-filtering mask, as shown and described.
FIG. 1 is a front elevational view of a surface pattern for a nose and
mouth air-filtering mask showing my new design, the rear elevational view
being plain and unornamented;
FIG. 2 is a right side elevational view thereof, the left side being a
mirror image of the right;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a bottom view thereof.
The broken line showing of the nose and mouth air-filtering mask and human
head are for illustrative purposes only and forms no part of the claimed
design.