2288812

Information

• Patent Grant
• 2288812

• References
• Source

• Patent Number

  2,288,812

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1942
  82 years ago

• CPC

  • H03B5/1835 - the active element in the amplifier being a vacuum tube
  • H01J21/08 - with movable electrode or electrodes
  • H01J25/00 - Transit-time tubes
  • H01J25/68 - Tubes specially designed to act as oscillator with positive grid and retarding field
  • H03B9/01 - using discharge tubes

• US Classifications

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