2199438

Information

• Patent Grant
• 2199438

• References
• Source

• Patent Number

  2,199,438

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1940
  84 years ago

• CPC

  • H01J31/32 - Tubes with image amplification section
  • H01J29/38 - not using charge storage
  • H01J31/42 - with image screen generating a composite electron beam which is deflected as a whole past a stationary probe to simulate a scanning effect
  • H01J40/06 - Photo-emissive cathodes

• US Classifications

  • 348 - Television
  • 250 - Radiant energy
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 427 - Coating processes