ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,626, issued on Feb. 3, was assigned to Shenzhen Weiteshijia Technology Co. Ltd (Shenzhen, China).
"Portable fan with predictable battery life and method for predicting battery life thereof" was invented by Caixia Zhu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable fan with predictable battery life and a method for predicting battery life thereof. The portable fan includes a fan body, where a circuit board assembly and a storage battery are installed in a shell of the fan body, a microprocessor and a current collector are encapsulated in the circuit board assembly, a load and a display device are provided on the fan body, an...