Top 100 US Patents in Packing Materials
section b - performing operations; transporting > conveying; packing; storing; handling thin or filamentary material > containers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers; accessories, closures, or fittings therefor; packaging elements; packages
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