Support base

Description

FIG. 1 is an upper perspective view;

FIG. 2 is a lower perspective view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is an end view; and,

FIG. 6 is a side view.

Claims

The ornamental design for a support base, as shown and described.