ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,184, issued on Feb. 17, was assigned to Shenzhen Street Cat Technology Co. Ltd (Shenzhen, China).
"Modular hand warmer" was invented by Zeda Hu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A modular hand warmer includes a heating casing and a power supply component. The heating casing is hollow and provided therein with a power supply cavity. The heating casing is provided with a first outlet communicating with the power supply cavity. The heating casing is provided with a heating element. The shape of the power supply component is adapted to the power supply cavity. The power supply component is capable of being detachably insert...