ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,140, issued on Feb. 25, was assigned to Ralf Edinger (Richmond, Canada).
"Electron gun and system and method using electron gun" was invented by Ralf Edinger (Richmond, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "Examples of an electron gun with a moving cathode station and a moving anode station are described. The moving cathode has a driver that moves the station and comprises a plurality of cathodes with a plurality of bias cups to control a thermal electron emission region by applying a bias voltage to the bias cup. The moving anode station comprises a plurality of anodes and has driver to move the anode station such that a position of...