InventHelp Inventor Develops Improved Graded Sports Card Case (RKH-895)

PITTSBURGH, Nov. 13, 2025 /PRNewswire/ -- "I wanted to create a protective holder for graded sports cards that enables you to clearly view the card," said an inventor, from Gulfport, Miss., "so I invented the SLAB MAGS LIGHT. My design ensures the card is safe, and it could enhance the...

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