Air stone

USD1156471SActive Publication Date: 2026-11-03ZHONGSHAN ZAOMENGKONGJIAN ELECTRONIC COMMERCE LTD

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[0001] FIG. 1 is a front, left and top perspective view of an air stone, showing my new design;

[0002] FIG. 2 is a rear, right and bottom perspective view thereof;

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

[0004] FIG. 4 is a rear view thereof;

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

[0006] FIG. 6 is a right side view thereof;

[0007] FIG. 7 is a top plan view thereof; and,

[0008] FIG. 8 is a bottom plan view thereof.

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