2424294

Information

• Patent Grant
• 2424294

• References
• Source

• Patent Number

  2,424,294

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1947
  77 years ago

• CPC

  • H01J19/30 - characterised by the material
  • H01J2893/0021 - carbon

• US Classifications

  • 445 - Electric lamp or space discharge component or device manufacturing