ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,335, issued on Feb. 10, was assigned to Guangdong Peir Outdoor Products Co. Ltd. (Huizhou, China).
"Dual-duct air pump" was invented by Kaili Chen (Guangdong, China) and Xi Chen (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a dual-duct air pump, including a pump casing, a centrifugal fan, and a diaphragm pump. A first air opening and a second air opening that are interconnected, and an independent air opening are disposed on the pump casing, the first air opening is used for communication with the outside world, and the second air opening and the independent air opening are used for communication with independent infl...