2256461

Information

• Patent Grant
• 2256461

• References
• Source

• Patent Number

  2,256,461

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1941
  83 years ago

• CPC

  • H01J31/503 - with an electromagnetic electron-optic system

• US Classifications

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