ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,943, issued on May 5, was assigned to Shenzhen Qishunda Xingye Technology Co. Ltd. (Shenzhen, China).
"Rotary digital display device" was invented by Tiaoping Tang (Shenzhen, China), Tao Cheng (Shenzhen, China) and Jugen Yang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a rotary digital display device, including a main body support, a battery, a flexible circuit board, a light guide rod, membranes, and a projection dome cover. The main body support includes a cylindrical surface, and a first end portion and a second end portion. The battery is arranged in the main body support. The flexible circuit board is affixed arou...