FIG. 1 is a front view of a first embodiment of a refrigerator, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a bottom perspective view thereof;
FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1;
FIG. 10 is an enlarged view of the encircled portion 10 in FIG. 8;
FIG. 11 is a front view of a second embodiment of a refrigerator, showing our new design;
FIG. 12 is a front view thereof;
FIG. 13 is a rear view thereof;
FIG. 14 is a left-side view thereof;
FIG. 15 is a right-side view thereof;
FIG. 16 is a top view thereof;
FIG. 17 is a bottom view thereof;
FIG. 18 is a bottom perspective view thereof;
FIG. 19 is a front view of a third embodiment of a refrigerator, showing our new design;
FIG. 20 is a front view thereof;
FIG. 21 is a rear view thereof;
FIG. 22 is a left-side view thereof;
FIG. 23 is a right-side view thereof;
FIG. 24 is a top view thereof;
FIG. 25 is a bottom view thereof; and,
FIG. 26 is a bottom perspective view thereof.
The even-dash broken lines illustrating portions of the refrigerator form no part of the claimed design. The dot-dash broken lines in the figures represent a boundary line and form no part of the claimed design. The dot-dot-dash broken lines encircling enlargement portions of the claimed design form no part of the claimed design.