205049 ⎘
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group; Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement; Arrangements for focusing or reflecting ray or beam; Magnetic lenses using permanent magnets only
Systems and methods for electron beam focusing in electron beam additive manufacturing
#2Systems and methods for electron beam focusing in electron beam additive manufacturing
#3Permanent-magnet particle beam apparatus and method incorporating a non-magnetic metal portion for tunability