Backpack vacuum

FIG. 1 is an isometric front perspective view of the front and upper surface of the backpack vacuum, showing our new design.

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view, showing the side opposite that shown in FIG. 4 ;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The area between the broken away lines is understood to form no part of the claimed design.