US D497170 S1
FIG. 1 is a front view of a thread cassette for sewing machine;
FIG. 2 is a right-side view thereof;
FIG. 3 is a left-side view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right perspective view thereof; and,
FIG. 6 is a left perspective view thereof.
The top and rear views only contain ornamentality and are omitted.
The broken line defines the bounds of the claimed design but does not form part of the claimed design.