Claims (1)
Claim 1 (Independent)
The ornamental design for a ballast-free tank, as shown and described.
Full Description
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FIG. 1 is a perspective view of a ballast-free tank comprising the new design;
FIG. 2 is a front side view thereof, where the right side, the left side, and the rear side views are mirror images thereof;
FIG. 3 is a top view thereof; and,
FIG. 4 is a bottom view thereof.
The broken lines depict portions of the ballast-free tank that form no part of the claimed design.
Citations
This patent cites (24)
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