2168403

Information

• Patent Grant
• 2168403

• References
• Source

• Patent Number

  2,168,403

• Date Filed

  Not available

• Date Issued

  Tuesday, August 8, 1939
  85 years ago

• CPC

  • H03K4/28 - using a tube operating as a switching device
  • H03K4/10 - using as active elements vacuum tubes only
  • H03K4/12 - in which a sawtooth voltage is produced across a capacitor
  • H03K4/34 - using a single tube with positive feedback through a transformer

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 310 - Electrical generator or motor structure
  • 331 - Oscillators