| 摘要 |
A box is erected from a blank and has a rectangular bottom, four sides and a rectangular top. The top is formed by four flaps, each extending foldably from an upper edge of one of the sides. These flaps overlap and interlock with one another. The flaps are additionally provided with finger-grip openings dimensioned to receive fingers of a person carrying the box. The arrangement of the openings is such that when the box is carried by fingers received in the openings provided in the opposing flaps, the interlock between the flaps prevents the flaps from parting from one another.
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