3021447

Information

• Patent Grant
• 3021447

• References
• Source

• Patent Number

  3,021,447

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1962
  62 years ago

• CPC

  • H01J25/24 - in which the electron stream is in the axis of the resonator or resonators and is pencil-like before reflection

• US Classifications

  • 315 - Electric lamp and discharge devices: systems