3377564

Information

• Patent Grant
• 3377564

• References
• Source

• Patent Number

  3,377,564

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1968
  56 years ago

• CPC

  • H05B6/6482 - combined with radiant heating
  • H03B5/1835 - the active element in the amplifier being a vacuum tube

• US Classifications

  • 331 - Oscillators
  • 219 - Electric heating