2817040

Information

• Patent Grant
• 2817040

• References
• Source

• Patent Number

  2,817,040

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1957
  67 years ago

• CPC

  • H01J25/48 - Tubes in which two electron streams of different velocities interact with one another
  • H01J25/40 - the backward travelling wave being utilised
  • H01J25/46 - the backward travelling wave being utilised

• US Classifications

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