Portable oxygen concentrator

USD1107235SActive Publication Date: 2025-12-23SHENZHEN SIJIE BORUI TECHNOLOGY CO LTD

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[0001] FIG. 1 is a front elevation view of a portable oxygen concentrator showing the new design;

[0002] FIG. 2 is a back elevation view thereof;

[0003] FIG. 3 is a left-side view thereof;

[0004] FIG. 4 is a right-side view thereof;

[0005] FIG. 5 is a top plan view thereof;

[0006] FIG. 6 is a bottom plan view thereof;

[0007] FIG. 7 is a perspective view thereof; and

[0008] FIG. 8 is another perspective view thereof; and,

[0009] FIG. 9 is an enlarged view of the encircled portion in FIG. 7.

[0010] The equal-length broken lines depict portions of the portable oxygen concentrator that form no part of the claimed design.

[0011] 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.

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