| 摘要 |
A motion picture screen assembly having a horizontal support beam and having a motion picture viewing screen which is detachably fastened at its upper edge to the support beam. Preferably two lifting rams are located near the ends of the support beam. The lifting rams operate to raise the support beam so that the attached viewing screen assumes a vertical viewing position. The assembly can be put up and taken down both outdoors and indoors, and is completely portable.
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