FIG. 1 is a top perspective view of a first embodiment of a stackable inverter generator showing our new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a left side elevation view thereof;
FIG. 7 is a right side elevation view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a top perspective view of a second embodiment of a stackable inverter generator showing our new design;
FIG. 10 is a bottom perspective view thereof;
FIG. 11 is a top plan view thereof;
FIG. 12 is a front elevation view thereof;
FIG. 13 is a rear elevation view thereof;
FIG. 14 is a left side elevation view thereof;
FIG. 15 is a right side elevation view thereof; and,
FIG. 16 is a bottom plan view thereof.
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.