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The ornamental design for a circular wing aircraft, as shown. |
FIG. 1 is a top plan view of a circular wing aircraft showing my new design;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a sectional view thereof taken along line 3--3 of FIG. 1;
FIG. 4 is a sectional view thereof taken along line 4--4 of FIG. 1;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevational view thereof; and
FIG. 7 is a rear elevational view thereof.
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