2497111

Information

• Patent Grant
• 2497111

• References
• Source

• Patent Number

  2,497,111

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1950
  74 years ago

• CPC

  • H01J19/30 - characterised by the material
  • H01J1/146 - with metals or alloys as an emissive material
  • H01J2893/002 - chemical
  • Y10T428/292 - In coating or impregnation

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 427 - Coating processes
  • 428 - Stock material or miscellaneous articles