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The ornamental design for a portable scaffold, as shown. |
FIG. 1 is a perspective view of a portable scaffold showing our new design;
FIG. 2 is a left side elevational view thereof, the opposite side being the same in appearance;
FIG. 3 is a top plan view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a front elevational view thereof; and
FIG. 6 is a bottom plan view thereof.
Smith, Larry W., Caldwell, Richard L.
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