3428020

Information

• Patent Grant
• 3428020

• References
• Source

• Patent Number

  3,428,020

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  55 years ago

• CPC

  • H03J1/044 - Illumination of the tuning dial; On and off switching of the illumination; Circuits related with illumination

• US Classifications

  • 116 - Signals and indicators
  • 074 - Machine element or mechanism
  • 455 - Telecommunications