Air purifier

USD1057130SActive Publication Date: 2025-01-07LANGBERG ERIC A

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[0001] FIG. 1 is a front perspective view of an air purifier showing my new design;

[0002] FIG. 2 is a front view thereof;

[0003] FIG. 3 is a rear view thereof;

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

[0005] FIG. 5 is a left side view thereof;

[0006] FIG. 6 is a top view thereof; and,

[0007] FIG. 7 is a bottom view thereof.

[0008] Broken lines illustrate portions of the air purifier that form no part of the claimed design.

The ornamental design for an air purifier, as shown and described.