3700952

Information

• Patent Grant
• 3700952

• References
• Source

• Patent Number

  3,700,952

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1972
  52 years ago

• CPC

  • H01J3/021 - Electron guns using a field emission, photo emission, or secondary emission electron source
  • H01J25/40 - the backward travelling wave being utilised

• US Classifications

  • 315 - Electric lamp and discharge devices: systems