2217748

Information

• Patent Grant
• 2217748

• References
• Source

• Patent Number

  2,217,748

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1940
  84 years ago

• CPC

  • H03B7/04 - active element being vacuum tube
  • H03B5/34 - active element in amplifier being vacuum tube
  • H03F3/54 - Amplifiers using transit-time effect in tubes or semiconductor devices

• US Classifications

  • 331 - Oscillators