The ornamental design for a combined dual worktable and storage cabinet unit, as shown and described.
FIG. 1 shows an elevation of the front of the combined dual work table and
storage cabinet unit, the rear thereof being of corresponding appearance;
FIG. 2 shows an elevation of the left side of the combined dual work table
and storage cabinet unit, the right side thereof being of corresponding
appearance;
FIG. 3 shows a plan view of the combined dual work table and storage
cabinet unit; and
FIG. 4 shows a perspective view of the combined dual work table and storage
cabinet unit.