ALEXANDRIA, Va., June 17 -- United States Patent no. 12,310,469, issued on May 27.
"Card holder" was invented by Zhouwen Liu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A card holder includes at least one first elastic band at least two clamping plates. The at least one the clamping plates includes a containing groove and a first convex block arranged in the containing groove; the first elastic band includes at least a first hanging hole, and the first convex block is fixed in the first hanging hole. The at least one first elastic band extends from a position adjacent to one end on one surface of the clamping plate to a position adjacent to one end on one surface of the other clamping pla...