3889143

Information

• Patent Grant
• 3889143

• References
• Source

• Patent Number

  3,889,143

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1975
  49 years ago

• CPC

  • H01J9/12 - of photo-emissive cathodes of secondary-emission electrodes
  • H01J1/34 - Photo-emissive cathodes
  • H01J2201/3423 - Semiconductors
  • Y10S148/049 - Equivalence and options
  • Y10S148/051 - Etching
  • Y10S148/072 - Heterojunctions
  • Y10S148/135 - Removal of substrate

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 148 - Metal treatment
  • 257 - Active solid-state devices
  • 438 - Semiconductor device manufacturing: process