2172746

Information

• Patent Grant
• 2172746

• References
• Source

• Patent Number

  2,172,746

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1939
  85 years ago

• CPC

  • H03K4/22 - combined with transitron

• US Classifications

  • 331 - Oscillators
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems