3890541

Information

• Patent Grant
• 3890541

• References
• Source

• Patent Number

  3,890,541

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • H01J29/58 - Arrangements for focusing or reflecting ray or beam
  • H01J31/124 - using electron beam scanning

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices