ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,666, issued on Nov. 11, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Air conditioner" was invented by Junseong Park (Seoul, South Korea), Eunjun Cho (Seoul, South Korea) and Jihyeong Ryu (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioner, including a first compressor that compresses refrigerant; a second compressor that compresses the refrigerant; an indoor heat exchanger that performs heat exchange between the refrigerant and air; a first four-way valve connected to the first compressor; a first outdoor heat exchanger connected to the first four-way valve; a first valve connected to the first four-wa...