Portable oxygen concentrator

Description

FIG. 1 is a front elevation view of a portable oxygen concentrator showing the new design;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof; and

FIG. 8 is another perspective view thereof; and,

FIG. 9 is an enlarged view of the encircled portion in FIG. 7.

The equal-length broken lines depict portions of the portable oxygen concentrator that form no part of the claimed design.

The dash-dot lines in FIG. 7 and FIG. 9 illustrate the boundaries of the enlarged view indicators and form no part of the claimed design.

Claims

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