ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,874, issued on March 18, was assigned to FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING Co. LTD. (Foshan, China).

"Household appliance knob" was invented by Zhaojia Xie (Foshan, China), Yunfeng Wang (Foshan, China), Shufeng Huang (Foshan, China), Deyong Jiang (Foshan, China), Taiyang Jiang (Foshan, China) and Liang Zheng (Foshan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A knob includes a first assembly and a second assembly. The first assembly includes a first sensing element. The second assembly is sleeved at the first assembly and includes a second sensing element. The first sensing element is configured to, when the ...