A stackable plastic container, manufactured as one piece in a blow molding process and designed for transporting hazardous liquids has a parallelepipedal form with rounded corners and edges. The container is provided with a U-shaped protruding stacking surface with two legs, whereby the legs in the direction...http://www.google.fr/patents/US5265743?utm_source=gb-gplus-shareBrevet US5265743 - Stackable plastic container
