Corner portion of a frameless screen

FIG. 1 shows a perspective view of a corner portion of a frameless screen, wherein the corner portion extends to dashed lines presented in FIG. 1 ;

FIG. 2 shows an enlarged fragmented perspective view of the corner portion of FIG. 1 ;

FIG. 3 shows a top view of the corner portion of FIG. 1 ;

FIG. 4 shows a front view of the corner portion of a frameless screen, wherein the rear view is a mirror image thereof; and,

FIG. 5 shows a right side view of the corner portion of FIG. 1 .

Any broken lines in FIGS. 1-5 are for environmental purposes only and form no part of the claimed design. The ornamental design which is claimed is shown in solid lines in the drawings. The bottom views and left side views of the corner portions of FIGS. 1-5 are not shown, as no part of the claimed ornamental designs is visible from those perspectives.