The ornamental design for a flat control panel, as shown and described.
This application is related to U.S. Design patent application Ser. No. 29/164,947, filed Aug. 2, 2002, listing Asdrubal Garcia-Ortiz as inventor and entitled "Flat Control Panel" the entire disclosure of which is herein incorporated by reference to the extent not inconsistent herewith.
The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
The FIGURE is a front view of a flat control panel showing my new design.