H01J2203/0292 - CPC Classification Index

ClassID:

205850 ⎘

H01J2203/0292 - CPC Classification

Classification description:

Electron or ion optical arrangements common to discharge tubes or lamps; Electron guns using cold cathodes, e.g. field emission cathodes Potentials applied to the electrodes

Recent Application in this class:

20160148776

2016-05-26

Field emission device with ground electrode

20070029919

2007-02-08

Electron emission device having a focus electrode and a fabrication method therefor

20060220584

2006-10-05

Electron emission device