2190712

Information

• Patent Grant
• 2190712

• References
• Source

• Patent Number

  2,190,712

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1940
  85 years ago

• CPC

  • H05H7/18 - Cavities Resonators
  • H01J25/00 - Transit-time tubes
  • H01J25/68 - Tubes specially designed to act as oscillator with positive grid and retarding field
  • H03B5/1835 - the active element in the amplifier being a vacuum tube

• US Classifications

  • 331 - Oscillators
  • 333 - Wave transmission lines and networks