Robot cleaner

FIG. 1 is a perspective view of a robot cleaner showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a rear perspective view thereof showing the dust canister detached.

The broken lines represent unclaimed portions of the robot cleaner and form no part of the claimed design.