| 摘要 |
A blanket for covering the printed document comprising an elongated sheet of flexible transparent material having a vertical height substantially equal to the vertical height of the document which is covered and a horizontal length substantially equal to the horizontal width of the document to be covered, the blanket having vertical pouches at the opposite horizontal ends thereof and adapted to be positioned adjacent to the vertical side edges of the document to be covered, the pouches being filled with a material constituting weights.
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