3289091

Information

• Patent Grant
• 3289091

• References
• Source

• Patent Number

  3,289,091

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1966
  59 years ago

• CPC

  • H01J25/49 - Tubes using the parametric principle

• US Classifications

  • 330 - Amplifiers
  • 307 - Electrical transmission or interconnection systems
  • 315 - Electric lamp and discharge devices: systems
  • 333 - Wave transmission lines and networks
  • 455 - Telecommunications