2697182

Information

• Patent Grant
• 2697182

• References
• Source

• Patent Number

  2,697,182

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1954
  70 years ago

• CPC

  • H01J31/508 - Multistage converters
  • H01J29/89 - Optical or photographic arrangements structurally combined or co-operating with the vessel
  • H01J2229/893 - using lenses

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 250 - Radiant energy
  • 359 - Optical: systems and elements