FIG. 1 is a front view of a cord end stopper of the claimed design.

FIG. 2 is a right side view of the cord end stopper of FIG. 1.

FIG. 3 is a top view of the cord end stopper of FIG. 1.

FIG. 4 is a bottom view of the cord end stopper of FIG. 1.

FIG. 5 is a perspective view of the cord end stopper of FIG. 1.

FIG. 6 is a front view of a socket part of the cord end stopper of FIG. 1.

FIG. 7 is a right side view of the socket part of FIG. 6.

FIG. 8 is a top view of the socket part of FIG. 6.

FIG. 9 is a bottom view of the socket part of FIG. 6.

FIG. 10 is a perspective view of the socket part of FIG. 6.

FIG. 11 is a front view of a plug part of the cord end stopper of FIG. 1.

FIG. 12 is a rear view of the plug part of FIG. 11.

FIG. 13 is a front view of the plug part of FIG. 11.

FIG. 14 is a bottom view of the plug part of FIG. 11.

FIG. 15 is a right side view of the plug part of FIG. 11.

FIG. 16 is a perspective view of the plug part of FIG. 11; and,

FIG. 17 is a perspective reference view of the cord end stopper of FIG. 1, showing it in use.

The broken line showing of the cord is included for the purpose of illustrating environmental structure and forms no part of the claimed design.