3390297

Information

• Patent Grant
• 3390297

• References
• Source

• Patent Number

  3,390,297

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1968
  56 years ago

• CPC

  • H01J17/06 - Cathodes
  • H01J17/066 - Cold cathodes
  • H01J17/38 - Cold-cathode tubes
  • H01J17/40 - with one cathode and one anode
  • H01J61/94 - Paths producing light of different wavelenghts
  • H01J2893/0065 - Electrode systems
  • H01J2893/0066 - Construction, material, support, protection and temperature regulation of electrodes Electrode cups
  • H01J2893/0067 - Electrode assembly without control electrodes

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 356 - Optics: measuring and testing