Toilet Tank

FIG. 1 is a perspective view of a toilet tank;

FIG. 2 is a front view of FIG. 1 ;

FIG. 3 is a rear view of FIG. 1 ;

FIG. 4 is a top view of FIG. 1 ;

FIG. 5 is bottom view of FIG. 1 ;

FIG. 6 is a side view of FIG. 1 ; and,

FIG. 7 is another side view of FIG. 1 .

The ornamental design which is claimed is shown in solid lines in the drawings. Broken lines formed by equal length dashes show depict portions of the toilet tank that form no part of the claimed design. Broken lines formed by unequal length dashes (i.e., dash-dot) define bounds of the claimed design and form no part thereof.