What is claimed is the ornamental design for a grill fork, as shown and described.
FIG. 1 is a perspective view of a grill fork showing our new design;
FIG. 2 is a top plan view thereof, with the bottom plan view being identical thereto; and,
FIG. 3 is a right side elevational view thereof, with the left side elevational view being a mirror image thereof.
The dotted lines are provided for illustrative purposes only and form no part of the design claimed.
The inner left side of the bifurcation is substantially identical to the appearance of the right side. The only difference between the two sides is in the variant curvature at the inner end of the tines.