FIG. 1 is a perspective view of a supporting frame showing the claimed design in an unfolded configuration;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another perspective view showing the claimed design in the unfolded configuration for supporting an electronic device;
FIG. 9 is another perspective view showing the claimed design being in another unfolded configuration;
FIG. 10 is another perspective view showing the claimed design being in another unfolded configuration; and,
FIG. 11 is another perspective view showing the claimed design being in a folded configuration.
The broken lines are directed to environment and are for illustrative purpose only; the broken lines form no part of the claimed design.