2211859

Information

• Patent Grant
• 2211859

• References
• Source

• Patent Number

  2,211,859

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1940
  84 years ago

• CPC

  • H03F1/08 - Modification of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
  • H01J25/68 - Tubes specially designed to act as oscillator with positive grid and retarding field
  • H01J25/76 - Dynamic electron-multiplier tubes
  • H03F1/50 - with tubes only

• US Classifications

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