The ornamental design for a displaytower, as shown and described.
FIG. 1 is a front perspective view of one embodiment of a display tower.
FIG. 2 is a front view of the embodiment depicted in FIG. 1. The left-side view, the right-side view, and the back view are identical to the front view in FIG. 2.
FIG. 3 is a top view of the embodiment depicted in FIG. 1.
FIG. 4 is a bottom view of the embodiment depicted in FIG. 1.
FIG. 5 is a front perspective view of one embodiment of a display tower.
FIG. 6 is a front view of the embodiment depicted in FIG. 5. The left-side view, the right-side view, and the back view are identical to the front view in FIG. 6; and,
FIG. 7 is a top view of the embodiment depicted in FIG. 5. The bottom view of the embodiment depicted in FIG. 5 is identical to FIG. 4.
The broken lines showing elements of the display tower in the above-described Figures are for illustrative purposes and form no part of the claimed design.