ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,294, issued on March 18, was assigned to SHENYANG HAIER REFRIGERATOR Co. LTD. (Liaoning, China), QINGDAO HAIER REFRIGERATOR Co. LTD. (Shandong, China) and HAIER SMART HOME Co. LTD. (Shandong, China).

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

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerator, comprising a refrigerator body and a door body. The front side of the refrigerator body is open to define a first chamber. The door body comprises a main door and a secondary door, wherein the main door is used for opening or closing the fir...