ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,537, issued on July 14.
"Pumping device" was invented by Meng-Chun Wang (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pumping device is provided, wherein the pumping device includes: a base including a main body having a base portion, one-way valves and perforations disposed through the base portion, and a cover attached to the base portion, the one-way valves being disposed on the base portion, nozzles being disposed on the base portion for selectably communicating inlet and outlet of the pumping device, the cover covering the base portion to form air passages in communication with the perforations, the cover including at ...