ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,920, issued on April 14, was assigned to NINGBO LUISWELL TOOLS Co. LTD. (Ningbo, China).
"Hand-held wireless electric sprayer" was invented by Peng Liu (Ningbo, China) and Xiaofei Lu (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand-held wireless electric sprayer includes a shell formed by assembling an upper shell and a lower shell, a pump and a battery installed inside the shell, a switch mechanism for controlling the pump to be turned on and off, a liquid inlet pipe communicated with the pump and extending to the outside of the shell, and a spray nozzle communicated with the pump, wherein an outer end of the spray nozzle is pr...