The ornamental design for a curved flat cookware side handle, as shown and described.
FIG. 1 is a perspective view of the “curved flat cookware side handle”, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a right elevation view thereof, the left side elevation being a mirror image thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a back elevation view.
The broken lines in FIGS. 1, 3, 4 and 6, are for illustrative purposes only, depicting the environment of the new design, forming no part thereof as claimed.