ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,408,677, issued on Sept. 9.
"Portable smoke injection device" was invented by Shangding Deng (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application offers a portable smoke injection device that includes several key components: a main body housing a control circuit board, an ignition module for igniting the material to be burned, and a gas delivery module for outputting smoke from the device. At one end of the main body is a smoke outlet for releasing the smoke. The device features an air inlet and a combustion chamber inside the main body, designed to hold the material being burned. The smoke outlet is positioned outsi...