Nasal Mask

FIG. 1 is a perspective view showing a nasal mask design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures depict portions of the nasal mask that form no part of the claimed design.

The dash-dot-dot-dash lines shown in the drawings represent boundaries of the claimed design and form no part of the claimed design.