ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,536, issued on April 14, was assigned to CHONGQING HAIER REFRIGERATION ELECTRIC APPLIANCE Co. LTD. (Chongqing, China), QINGDAO HAIER REFRIGERATOR Co. LTD. (Qingdao, China) and HAIER SMART HOME Co. LTD. (Qingdao, China).

"Refrigerator" was invented by Zhanpeng Cui (Qingdao, China), Jiaming Li (Qingdao, China), Lisheng Ji (Qingdao, China) and Peng Lv (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerator, comprising a refrigerator body, a front side of which opens to define a first chamber; a door body, comprising a main door and a secondary door, the main door being used to open/close the first chamber and defining a second ch...