The ornamental design for a cross-shaped display frame for insertion of display material, as shown and described.
FIG. 1 is a front perspective view of a cross-shaped display frame for insertion of display material in accordance with the present invention, with the rear perspective view being a mirror image thereof;
FIG. 2 is a front thereof, with the rear view being a mirror image thereof;
FIG. 3 is a left side view thereof, with the right side view being a mirror image thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front perspective view of another embodiment of a cross-shaped display frame for insertion of display material in accordance with the present invention, with the rear perspective view being a mirror image thereof;
FIG. 7 is a front thereof, with the rear view being a mirror image thereof;
FIG. 8 is a left side view thereof, with the right side view being a mirror image thereof;
FIG. 9 is a top view thereof; and,
FIG. 10 is a bottom view thereof.
The dot-dash broken lines in FIGS. 6-10 represent the bounds of the claimed design and form no part thereof.