ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,738, issued on Jan. 28.
"Telescopic rod for a desk lamp" was invented by Jing Liu (Hebei Province, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A telescopic rod includes a moving rod having a longitudinal guide groove along its outer surface, first and second friction pads at a first end, and a threaded ring at a second opposite end. A positioning rod includes at a top end a limiting with a limiting cylinder with a limiting protrusion projecting from an inside surface configured to be received in the guide groove when the moving rod is slideably installed inside the positioning rod. First and second openings are provided in the first end of ...