2201695

Information

• Patent Grant
• 2201695

• References
• Source

• Patent Number

  2,201,695

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1940
  84 years ago

• CPC

  • H01J21/12 - Tubes with variable amplification factor
  • H01J2893/0032 - Tubes with variable amplification factor

• US Classifications

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