ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,520, issued on Oct. 14.
"End caps for collectible card protective holders" was invented by Patrick Michael Davis (St. Charles, Mo.), Katherine Zanitsch (St. Charles, Mo.) and Dylan James Stradtmann (Breckenridge Hills, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An end cap, a collectible card protective assembly, and a storage system generally comprise a cover sized to extend over and close the open end of a collectible card holder, and an engagement member configured to engage the collectible card holder and releasably secure the cover to the collectible card holder. The end cap prevents removal of the collectible card from the pocket when t...