3428021

Information

• Patent Grant
• 3428021

• References
• Source

• Patent Number

  3,428,021

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  55 years ago

• CPC

  • H03J1/02 - Indicating arrangements
  • Y10S116/29 - TV tuner

• US Classifications

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