ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,181, issued on Sept. 23.
"Magnetic-fluid display apparatus with pickup function" was invented by Ceyu Qiu (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a magnetic-fluid display apparatus with a pickup function, the apparatus including a display container, a number of electromagnetic elements that control change of a magnetic field according to electrical signals, pickup devices, and a circuit board, where the display container is provided with a magnetic fluid, the magnetic fluid is located within a range of the magnetic field generated by the electromagnetic elements, and the electromagnetic elements and the pickup d...