3809941

Information

• Patent Grant
• 3809941

• References
• Source

• Patent Number

  3,809,941

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • H01J1/34 - Photo-emissive cathodes
  • H01J2201/3423 - Semiconductors
  • H01J2201/3425 - Metals, metal alloys

• US Classifications

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