2239769

Information

• Patent Grant
• 2239769

• References
• Source

• Patent Number

  2,239,769

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1941
  83 years ago

• CPC

  • H01J29/16 - Incandescent screens

• US Classifications

  • 348 - Television
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems