InventHelp Inventor Develops Protector for Trading Cards (TPL-297)

PITTSBURGH, Aug. 15, 2023 /PRNewswire/ — “I thought there could be a better way to encapsulate and protect a graded trading card during shipping,” said an inventor, from Rochester Hills, Mich., “so I invented the SLAB SHIPPER. My design eliminates the need to sandwich a trading card…