2221473

Information

• Patent Grant
• 2221473

• References
• Source

• Patent Number

  2,221,473

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • H03D1/26 - by means of transit-time tubes
  • H01J25/76 - Dynamic electron-multiplier tubes

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 315 - Electric lamp and discharge devices: systems
  • 330 - Amplifiers