ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,617, issued on Dec. 23.
"Polyhedral magnetic toy brick and combined structure" was invented by Xinyu Qiu (Taiyuan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses a polyhedral magnetic toy brick and a combined structure. A polyhedral magnetic toy brick includes an inner-layer assembly, at least two magnets and an outer skin assembly. The inner-layer assembly includes several board bodies folded to form the inner-layer assembly. The board bodies include at least one triangular magnetic face; two magnet mounting holes are formed in the magnetic face. One magnet is mounted in each magnet mounting hole, and the two ...