Bubble machine

FIG. 1 is a top perspective view of a bubble machine showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a right perspective view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a partial enlarged view of FIG. 4 ; and,

FIG. 10 is a partial enlarged view of FIG. 8 .

Broken lines in the drawings depict portions of the bubble machine that form no part of the claimed design. The additional broken lines surrounding the detail views are for annotative purposes only and form no part thereof.