2991391

Information

• Patent Grant
• 2991391

• References
• Source

• Patent Number

  2,991,391

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1961
  64 years ago

• CPC

  • H01J23/00 - Details of transit-time tubes of the types covered by group H01J25/00
  • H01J23/087 - Magnetic focusing arrangements
  • H01J23/42 - the interaction circuit being a helix or a helix-derived slow-wave structure
  • H01J25/38 - the forward travelling wave being utilised
  • H01J25/40 - the backward travelling wave being utilised

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices
  • 333 - Wave transmission lines and networks