3444375

Information

• Patent Grant
• 3444375

• References
• Source

• Patent Number

  3,444,375

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1969
  55 years ago

• CPC

  • H01J40/16 - having photo- emissive cathode
  • G01J3/00 - Spectrometry Spectrophotometry Monochromators Measuring colour
  • H01J49/486 - with plane mirrors

• US Classifications

  • 250 - Radiant energy
  • 313 - Electric lamp and discharge devices