3814968

Information

• Patent Grant
• 3814968

• References
• Source

• Patent Number

  3,814,968

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • H01J1/34 - Photo-emissive cathodes
  • H01J1/304 - Field-emissive cathodes
  • H01J9/12 - of photo-emissive cathodes of secondary-emission electrodes
  • H01J31/48 - Tubes with amplification of output effected by electron multiplier arrangements within the vacuum space
  • H01J31/49 - Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output
  • H01J2201/3423 - Semiconductors
  • Y10S257/917 - Plural dopants of same conductivity type in same region

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 257 - Active solid-state devices