The ornamental design for a cookingdevice, as shown and described.
FIG. 1 is a front perspective view of a cooking device;
FIG. 2 is a rear perspective view of the cooking device of FIG. 1;
FIG. 3 is a front view of the cooking device of FIG. 1;
FIG. 4 is a rear view of the cooking device of FIG. 1;
FIG. 5 is a right side view of the cooking device of FIG. 1;
FIG. 6 is a left side view of the cooking device of FIG. 1;
FIG. 7 is a top view of the cooking device of FIG. 1; and,
FIG. 8 is a view in perspective of the bottom of the cooking device of FIG. 1 showing the grid inside the cooking device.
The oblique line shading shown in FIGS. 3, 5, 6 and 7 indicate transparent nature of parts of claimed cooking device. Images of FIGS. 1, 2, 7 were taken aiming to show the transparent nature of parts of the claimed cooking device.