The ornamental design for a portablex-ray device, as shown and described.
FIG. 1 is a perspective view of a portable x-ray device;
FIG. 2 is a top view thereof;
FIG. 3 is a side view thereof;
FIG. 4 is another side view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a front perspective view thereof;
FIG. 7 is a side perspective view thereof; and,
FIG. 8 is another side perspective view thereof.
The broken lines immediately adjacent the shaded areas represent the bounds of the claim, while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.