2219872

Information

• Patent Grant
• 2219872

• References
• Source

• Patent Number

  2,219,872

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1940
  84 years ago

• CPC

  • H01J29/16 - Incandescent screens
  • H01J31/12 - with luminescent screen

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 427 - Coating processes