FIG. 1 is a perspective view of a first embodiment of a portable ozone generator showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a front side view thereof;
FIG. 7 is a back side view thereof;
FIG. 8 is a perspective view of a second embodiment of the portable ozone generator showing our new design;
FIG. 9 is a top plan view thereof;
FIG. 10 is a bottom plan view thereof;
FIG. 11 is a left side view thereof;
FIG. 12 is a right side view thereof;
FIG. 13 is a front side view thereof;
FIG. 14 is a back side view thereof;
FIG. 15 is a perspective view of a third embodiment of the portable ozone generator showing our new design;
FIG. 16 is a top plan view thereof;
FIG. 17 is a bottom plan view thereof;
FIG. 18 is a left side view thereof;
FIG. 19 is a right side view thereof;
FIG. 20 is a front side view thereof;
FIG. 21 is a back side view thereof;
FIG. 22 is a perspective view of a fourth embodiment of the portable ozone generator showing our new design;
FIG. 23 is a top plan view thereof;
FIG. 24 is a bottom plan view thereof;
FIG. 25 is a left side view thereof;
FIG. 26 is a right side view thereof;
FIG. 27 is a front side view thereof; and,
FIG. 28 is a back side view thereof.
The broken lines are included for the purpose of illustrating portions of the portable ozone generator that form no part of the claimed design.