| 摘要 |
A portable supporting device is provided and has a frame having an upper and lower surface with a transparent sheet member secured in a recess in the upper surface and a plurality of hollow tubes providing leg mounting means on the lower surface of the frame adjacent each corner thereof with four of the hollow tubes cooperating when legs are provided therein to form a portable table for supporting a book for reading in bed and a different four of the hollow tubes cooperating when legs are provided therein to form a table for providing a portable lap writing surface.
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