1554720

Information

• Patent Grant
• 1554720

• References
• Source

• Patent Number

  1,554,720

• Date Filed

  Not available

• Date Issued

  Tuesday, September 22, 1925
  99 years ago

• CPC

  • H01J61/125 - having an halogenide as principal component
  • H01J7/18 - Means for absorbing or adsorbing gas
  • H01J17/04 - Electrodes Screens
  • H01J17/06 - Cathodes
  • H01J17/52 - with one cathode and one anode
  • H01J17/58 - with more than one cathode or anode
  • H01J19/02 - Electron-emitting electrodes Cathodes
  • H01J21/16 - with external electrostatic control means and with or without internal control electrodes
  • H01J61/26 - Means for absorbing or adsorbing gas
  • H02M7/06 - using discharge tubes without control electrode or semiconductor devices without control electrode
  • H01J2893/0001 - Electrodes and electrode systems suitable for discharge tubes or lamps

• US Classifications

  • 313 - Electric lamp and discharge devices