Claims (1)
Claim 1 (Independent)
The ornamental design for an air stone, as shown and described.
Full Description
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FIG. 1 is a front, right and top perspective view of an air stone, showing my new design;
FIG. 2 is a rear, left and bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
Citations
This patent cites (6)
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