What is claimed is the ornamental design for a writing board, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a top perspective view showing the writing board of Applicant's invention.
FIG. 2 is a front view of the writing board of Applicant's invention.
FIG. 3 is a back view of the writing board of Applicant's invention.
FIG. 4 is a bottom perspective view of the writing board of Applicant's invention.
FIG. 5 is a right side view of the writing board of Applicant's invention; and,
FIG. 6 is a left side view of the writing board of Applicant's invention.