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CPC Subgroup
H01J 17/22

Means for obtaining or maintaining the desired pressure within the tube

Full Title

Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26) > Details > Means for obtaining or maintaining the desired pressure within the tube

2 direct subcodes

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  • H01J 17/24 Means for absorbing or adsorbing gas, e.g. by gettering
  • H01J 17/26 Means for producing, introducing, or replenishing gas or vapour during operation of the tube