US D335343 S
Abstract available in
FIG. 1 is a perspective view of a mouthpiece for a spirometer showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a side elevational view thereof, the opposite side elevational view being identical thereto;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.