Today in 1972, US Patent 172687 A was issued, an invention of John A. Angelbeck Jr., assigned to Pack Rite Packaging & Crating, for his “Pallet.” There’s no Abstract, but it’s described as a “pallet used for the storage and transporting of containers such as beer kegs and the like.” It’s essentially a plastic pallet, and while I’ve seen a few of them, I don’t think they’ve replaced the wooden pallet the way the inventor hoped.