| 摘要 |
Characterised in that it includes two uprights 10 and 16 fixed to the wall by means of screws 15 and pins 19, and of a grid produced with a tubular frame 1, which is criss-crossed by bars 2 and flat iron bars 3, supplemented with lugs permitting fastening by means of a padlock. This device, owing to its design, its casings and its butt plate (joint cover), is difficult to damage (break down). <IMAGE>
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