| 摘要 |
The invention relates to a specific locking system permitting frequent dismantling, and to an attachment method. It consists of a frame comprising: - a fixed part 1 and a removable part 2. This removable part separated from the fixed part makes it possible to insert and withdraw the documents very quickly without damaging the frame. The groove 4 on the four internal sides makes it possible to choose the direction of engagement according to the document inserted. <IMAGE>
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