ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,655, issued on July 28, was assigned to WAHL CLIPPER Corp. (Sterling, Ill.).

"Electric hair dryer" was invented by Wuhu Li (Zhejiang, China), Hao Zhang (Zhejiang, China) and Qing Wang (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hair dryer includes a handle, an airduct, a nozzle and a power cord, an included angle is formed between the handle and the airduct; the handle includes a first side surface, a second side surface, a third side surface and a fourth side surface are connected sequentially, the first side surface and the third side surface are arranged oppositely, the second side surface and the fourth side surface are arr...