A theft prevention device to be mounted on a parallelepipedic box, the device including a frame with an insert opening for enclosing the box. The frame is provided with a hook shaped lock tongue, displaceably and pivotally mounted to the frame. The hooked shaped lock tongue may be moved from an engaged...http://www.google.com/patents/US5368162?utm_source=gb-gplus-sharePatent US5368162 - Safety device for parallelepipedic box
