We claim the ornamental design for a curved spray cone, as shown and described.
FIG. 1 is a perspective view from the top of a curved spray cone, showing our new design, within its environment;
FIG. 2 is a perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a side elevation thereof; and,
FIG. 6 is another side elevation view being a mirror image of FIG. 5, the front elevation view and the rear elevation view being a mirror image thereof.
The broken lines shown in the figures are included for the purpose of illustrating environment and form no part of the claimed design.