ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,418, issued on Sept. 1, was assigned to Parric Ningbo Stationery and Gifts Mfg. Co. Ltd. (Ningbo, China).
"Rotary platform device" was invented by Fuping Li (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary platform device comprises a rotatable platform; a rotatable annular base disposed at the bottom of the platform. A top surface of the platform has a plane for placing objects, and the platform has an annular first groove; the annular base is disposed inside the annular first groove and is capable of rotating circumferentially along the annular first groove; a plurality of first balls is rotatably arranged at regular intervals...