| 摘要 |
Packing case consisting of a top 1 and of a bottom 2 which can be fitted onto an intermediate structure composed of vertical side panels 3 fixed to this top and to this bottom, which top and bottom are each provided with a frame designed by using a bent metal section 4 welded in an angle or in a corner where its ends join up, one of these being provided with a laminar extension or flap 5 to which are applied several spots of weld to close this frame. <IMAGE>
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