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A convention box is folded from a single flat sheet of cardboard, corrugated board or other similar rigid material, to form a disposable yet durable attache case that can be handed out to attendees at a convention or meeting. Side panel members attached to a back panel fold over tabs that are associ

A convention box is folded from a single flat sheet of cardboard, corrugated board or other similar rigid material, to form a disposable yet durable attache case that can be handed out to attendees at a convention or meeting. Side panel members attached to a back panel fold over tabs that are associated with top and bottom panels to lock the box into a rigid, rectangular shape, and also provide rigidity to the side panels. The handles for the convention box are formed as handle halves each formed in a respective front and rear top panel. A slot can be provided in the rear panel for insertion of literature without having to open the box.

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Convention box to be folded from a single flat sheet of rigid material of a predetermined thickness and handed out to convention or meeting attendees or the like for storage and carriage of literature materials at the convention or meeting, the convention box being generally rectangular and of a pre

Convention box to be folded from a single flat sheet of rigid material of a predetermined thickness and handed out to convention or meeting attendees or the like for storage and carriage of literature materials at the convention or meeting, the convention box being generally rectangular and of a predetermined overall height, width, and depth, and comprising: a rectangular back panel of said width and height, a first top panel of said width and depth and joined at a fold line to a top edge of said back panel, said first top panel including retangular tabs extending out from said edges thereof at fold lines a distance substantially half said height, and of a width smaller than said depth by substantially twice the predetermined thickness of said sheet; a bottom panel forming the base of said box and of said width and depth and joined at a fold line to a bottom edge of said back panel, said bottom panel including a pair of rectangular tabs extending out from side edges thereof at fold lines a distance substantially half said height, and of a width smaller than said depth by substantially twice the predetermined thickness of said sheet; a pair of side panel groups disposed at opposite side edges of said back panel, each said group having a height smaller than said box height by substantially twice the sheet thickness, and including a first panel member of said depth and joined at a fold line to the respective side edge of said back panel, a second panel member of a width substantially one to three times the sheet thickness and joined at a fold line to the respective side edge of said back panel, a second panel member of a width substantially three times the sheet thickness and joined at a fold line to a side edge of said first panel member, a third panel member joined at a fold line to a side edge of second panel member and of substantially said depth, and means on an outer side edge of said third panel member cooperating with engaging means at the corresponding side edge of said back panel for holding each said group and associated ones of said top and bottom panel tabs, such that said groups and tabs form substantially rigid, reinforced sides of said convention box; a rectangular front panel having a bottom edge joined at a fold line to said bottom panel and having a width smaller than said box width by several thicknesses of said sheet, and a height smaller than said box height by approximately said sheet thickness; side tabs joined at fold lines to said edges of said front panel and of substantially said depth, and including means to facilitate opening and closing of the box, a handle formed in at least one of said first and second top panels and folding out from the respective top panel, and permitting said box to close with the front panel side tabs inside the sides of said convention box and with the second top panel disposes inside of said first top panel, wherein one of said rectangular back panel and said rectangular front panel has a slot extending in the width direction thereof for a distance of substantially the length of a standard sheet of paper, for permitting convention or meeting literature to be inserted through it into the box without need to open the box.