Oxygen Concentrator

FIG. 1 is a front, right, and top perspective view of an oxygen concentrator, showing my new design;

FIG. 2 is a rear, left, and bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The even dashed broken lines shown in the drawings are included for the purpose of illustrating portions of the oxygen concentrator that form no part of the claimed design.