ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,683, issued on Dec. 23, was assigned to Shanghai Keto Tech Co. Ltd. (Shanghai).
"Liquid dispenser" was invented by Fangqi Zhong (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a liquid dispenser, including a pumping structure and a pressure-accumulation ejecting structure which cooperate for use, wherein the pumping structure includes a main frame, a liquid storage cavity and a piston rod, the liquid storage cavity is built into the main frame, and the lower end of the liquid storage cavity is provided with a liquid inlet and a liquid outlet which can be opened and closed; the piston rod can move upward and downward along the l...