The ornamental design for a combinationleakproofcarton and blank, as shown and described.
FIG. 1 is a top plan view of the blank of the combination leakproof carton and lid showing the lid unfolded. The bottom plan view is a mirror image thereof.
FIG. 2 is a perspective view of the combination leakproof carton and lid showing the assembled lid ready for assembly upon the carton. The opposite sides of the lid and the carton are mirror images thereof.
FIG. 3 is a perspective of the combination leakproof carton and lid assembled together. The sides not shown are the mirror images of the sides shown.
FIG. 4 is a side view of the lid shown in FIG. 1. The opposite side is a mirror image thereof; and,
FIG. 5 is an end view of the lid shown in FIG. 1. The opposite side is a mirror image thereof.
The fold lines shown in FIGS. 1 and 2 by broken lines are fold lines and form part of the claim.