2178764

Information

• Patent Grant
• 2178764

• References
• Source

• Patent Number

  2,178,764

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1939
  85 years ago

• CPC

  • H04N3/20 - Prevention of damage to cathode-ray tubes in the event of failure of scanning
  • H03F1/546 - Delaying application of anode power supply with respect to application of filament heating power supply

• US Classifications

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