74251 ⎘
Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper; Details of containers or of foldable or erectable container blanks; Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank to U-shape and defining after rupture a lid hinged about a line located in the top surface of the container