H01J2201/342 - CPC Classification Index

ClassID:

205820 ⎘

H01J2201/342 - CPC Classification

Classification description:

Electrodes common to discharge tubes; Photoemissive electrodes Cathodes

Sub-classes:

H01J2201/3421 » Composition of the emitting surface 3

Recent Application in this class:

20240412939

ELECTRON BEAM APPLICATION DEVICE AND METHOD FOR CREATING DETECTION DATA IN ELECTRON BEAM APPLICATION DEVICE

20190019648

Plasmon-excited electron beam array for complementary patterning

20130341527

Electron beam apparatus

20050168144

Photocathode