I claim the ornamental design for a toothbrush, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
1.1 is an assembled front view;
1.2 is a side view;
1.3 is a rear view;
1.4 is a side view;
1.5 is a front side perspective view;
1.6 is a top view and
1.7 is a bottom view.
2.1 is an exploded front side perspective front view; and
2.2 is another exploded front side perspective view.
3.1 is an exploded front side perspective front view; and
3.2 is another exploded front side perspective view.
4.1 is an assembled front side perspective view, showing the toothbrush in a retracted position.