3689847

Information

• Patent Grant
• 3689847

• References
• Source

• Patent Number

  3,689,847

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • H03B5/1835 - the active element in the amplifier being a vacuum tube
  • H05H7/02 - Circuits or systems for supplying or feeding radio-frequency energy

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 331 - Oscillators