ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,726, issued on Aug. 18.
"Inner roller, time display structure and timepiece" was invented by Donghong Zhang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are an inner roller, a time display structure and a timepiece. The inner roller includes a rotating rod and a plurality of rotating wheels, the plurality of rotating wheels are provided on the rotating rod at intervals, each of the rotating wheels is provided with numbers, the numbers on the plurality of rotating wheels are different and there are twelve numbers in total. The described inner roller can be used in cooperation with an outer barrel of a timepiece, so that t...