The ornamental design for a cartridge, 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.
FIG. 1 is a perspective view of the cartridge showing the design;
FIG. 2 is a front end plan view of the cartridge; and,
FIG. 3 is a side elevation view of the cartridge, the cartridge being rotationally symmetric, appearing the same from all sides.