The ornamental design for pedestal desk, as shown and described.
FIG. 1 is a perspective view of the pedestal desk embodying my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a right side elevational view thereof, the left side elevational view being a mirror image thereof.
FIGS. 1–6 show portions of the pedestal desk in phantom lines. The phantom line portions are shown for environmental purposes and form no part of the claimed design.