ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,369, issued on Feb. 17, was assigned to STAR SMART Ltd. (Hongkong, Hong Kong).
"Portable oil extraction pump" was invented by Zhijie Chen (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable oil extraction pump includes a mainframe, an oil extraction tube, an oil outlet tube and a pump body configured in the oil extraction tube. A mainframe includes a control cavity and a first routing hole connected to the control cavity. The control cavity is configured with a circuit board and a battery electrically connected to the circuit board. The battery is configured to supply the power to the circuit board. The oil extraction tube is...