The ornamental design for a third railbracket and coverboard, as shown and described.
FIG. 1 is a perspective view of a third rail bracket and coverboard of the present invention.
FIG. 2 a left elevational view of the third rail bracket and coverboard of FIG. 1.
FIG. 3 is a right elevational view of the third rail bracket and coverboard of FIG. 1.
FIG. 4 is a rear view of the third rail bracket and coverboard of FIG. 1.
FIG. 5 is a front view of the third rail bracket and coverboard of FIG. 1.
FIG. 6 is a top view of the third rail bracket and coverboard of FIG. 1; and,
FIG. 7 is a bottom view of the third rail bracket and coverboard of FIG. 1.
The broken lines shown in the drawings are included for the purpose of illustrating portions of the article that form no part of the claimed design.
The third rail bracket and coverboard is shown broken away to indicate that any portion of the article beyond what is shown forms no part of the claimed design.