FIG. 1 is a left, front and bottom side perspective view of a first embodiment of a case for a portable telephone showing our new design;

FIG. 2 is a top side elevation view of our new design, as shown in FIG. 1;

FIG. 3 is a left side elevation view of our new design, as shown in FIG. 1;

FIG. 4 is a front side elevation view of our new design, as shown in FIG. 1;

FIG. 5 is a right side elevation view of our new design, as shown in FIG. 1;

FIG. 6 is a rear side elevation view of our new design, as shown in FIG. 1;

FIG. 7 is a bottom side elevation view of our new design, as shown in FIG. 1;

FIG. 8 is a left, front and bottom side perspective view of a second embodiment of a case for a portable telephone showing our new design;

FIG. 9 is a top side elevation view of our new design, as shown in FIG. 8;

FIG. 10 is a left side elevation view of our new design, as shown in FIG. 8;

FIG. 11 is a front side elevation view of our new design, as shown in FIG. 8;

FIG. 12 is a right side elevation view of our new design, as shown in FIG. 8;

FIG. 13 is a rear side elevation view of our new design, as shown in FIG. 8; and,

FIG. 14 is a bottom side elevation view of our new design, as shown in FIG. 8.

The broken line matter in FIGS. 2, 3, 5, 6 and 7 is for illustrative purposes only and forms no part of the claimed design.