3027497

Information

• Patent Grant
• 3027497

• References
• Source

• Patent Number

  3,027,497

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1962
  63 years ago

• CPC

  • H01H47/20 - for producing frequency-selective operation of the relay
  • G08C23/02 - using infrasonic, sonic or ultrasonic waves
  • H01H51/32 - Frequency relays Mechanically-tuned relays
  • Y10T307/944 - Power circuit controlled

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 307 - Electrical transmission or interconnection systems
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets