2247138

Information

• Patent Grant
• 2247138

• References
• Source

• Patent Number

  2,247,138

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1941
  83 years ago

• CPC

  • H01J31/40 - having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode

• US Classifications

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