Portable oxygen concentrator

Description

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

1.1 : Front

1.2 : Back

1.3 : Left

1.4 : Right

1.5 : Top

1.6 : Bottom

1.7 : Perspective

FIG. 1.1 is front view of a portable oxygen concentrator# FIG. 1.2 is rear view thereof# FIG. 1.3 is left view thereof# FIG. 1.4 is right view thereof# FIG. 1.5 is top view thereof# FIG. 1.6 is bottom view thereof; and# FIG. 1.7 is perspective view thereof. The background color forms no part of the claimed design.

Claims

The ornamental design for a portable oxygen concentrator, as shown and described.