3022493

Information

• Patent Grant
• 3022493

• References
• Source

• Patent Number

  3,022,493

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1962
  63 years ago

• CPC

  • H04W88/027 - using frequency address codes
  • H04B5/0006 - using a receiver structurally associated with a loudspeaker or an earphone
  • H04B5/04 - Calling systems
  • Y10S116/30 - Remote TV tuner

• US Classifications

  • 340 - Communications: electrical
  • 116 - Signals and indicators
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 329 - Demodulators
  • 331 - Oscillators
  • 361 - Electricity: electrical systems and devices
  • 455 - Telecommunications