2840693

Information

• Patent Grant
• 2840693

• References
• Source

• Patent Number

  2,840,693

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1958
  66 years ago

• CPC

  • H03F1/546 - Delaying application of anode power supply with respect to application of filament heating power supply

• US Classifications

  • 455 - Telecommunications
  • 315 - Electric lamp and discharge devices: systems