H01J17/22 - CPC Classification Index

ClassID:

204759 ⎘

H01J17/22 - CPC Classification

Classification description:

Gas-filled discharge tubes with solid cathode; Details Means for obtaining or maintaining the desired pressure within the tube

Sub-classes:

H01J17/24 » Means for absorbing or adsorbing gas, e.g. by gettering 3
H01J17/26 » Means for producing, introducing, or replenishing gas or vapour during operation of the tube 11

Recent Application in this class:

20220328294

Reducing plasma formation in an ion pump

20160126050

Vacuum switching assembly

20130313980

Embodiments of a field emission device

20060150679

Bonding method for vent pipe of display panel