The ornamental design for a pillbox, as shown and described.
FIG. 1 is a perspective view of a pillbox.
FIG. 2 is an elevational view of the pillbox, the front, rear, left and right elevational views being the same.
FIG. 3 is a top view of the pillbox.
FIG. 4 is a bottom view of the pillbox.
FIG. 5 is a perspective view of the pillbox in an exploded view with a cover separated from a housing portion.
FIG. 6 is a perspective view of the housing portion;
FIG. 7 is another perspective view of the housing portion;
FIG. 8 is another perspective view of the housing portion;
FIG. 9 is a second perspective view of the pillbox in an exploded view with the cover separated from the housing portion.
FIG. 10 is an elevational view of the pillbox in an exploded view with the cover separated from the housing portion;
FIG. 11 is a top view of the lower portion; and,
FIG. 12 is a bottom view of the cover.
The broken lines shown in the drawings are included for purposes of illustrating portions of the pillbox that form no part of the claimed design. Although many broken lines and solid lines are shown in the drawings, it is contemplated by the inventors that one or more of these elements may be removed, for example by illustrating the element(s) as broken lines, or added by illustrating the element(s) with solid lines, to illustrate other embodiments of the present invention. Coloring of the lower housing portions and/or covers are optional and can include the color of metal. The surfaces can be shiny or matte.