FIG. 1 is a front elevational view of a electric desk showing my new design;
FIG. 2 is a rear elevational view thereof; and
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a top, front, right side perspective view thereof;
FIG. 8 is a bottom, rear, left side perspective view thereof;
FIG. 9 is a bottom, front, left side perspective view thereof;
FIG. 10 is an enlarged view of detail 10 in FIG. 1;
FIG. 11 is an enlarged view of detail 11 in FIG. 2;
FIG. 12 is an enlarged view of detail 12 in FIG. 3;
FIG. 13 is an enlarged view of detail 13 in FIG. 6;
FIG. 14 is an enlarged view of detail 14 in FIG. 6;
FIG. 15 is an enlarged view of detail 15 in FIG. 8;
FIG. 16 is an enlarged view of detail 16 in FIG. 8;
FIG. 17 is an enlarged view of detail 17 in FIG. 9; and,
FIG. 18 is an enlarged view of detail 18 in FIG. 9.
The broken lines in the figures are for the purposes of illustrating portions of the electric desk, which form no part of the claimed design.