3820487

Information

• Patent Grant
• 3820487

• References
• Source

• Patent Number

  3,820,487

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • H01J1/14 - characterised by the material
  • H01J17/066 - Cold cathodes
  • H01J2893/0066 - Construction, material, support, protection and temperature regulation of electrodes Electrode cups

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 252 - Compositions