ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,874, issued on Dec. 9, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Vacuum cleaner" was invented by Kihong Park (Seoul, South Korea), Jeongseop Park (Seoul, South Korea), Kahyung Choi (Seoul, South Korea) and Yeonsub Jin (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a vacuum cleaner. The present disclosure includes a suction motor providing a suction force, a nozzle unit sucking dust on a floor surface, a nozzle motor transferring a drive force to a rotating part, a nozzle shutter adjusting a size of a dust inlet, a battery providing power, a model selecting unit generating information on an operating s...