2757320

Information

• Patent Grant
• 2757320

• References
• Source

• Patent Number

  2,757,320

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1956
  68 years ago

• CPC

  • G05B1/025 - using inductance means
  • H01H51/32 - Frequency relays Mechanically-tuned relays
  • Y10T307/852 - Frequency

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 307 - Electrical transmission or interconnection systems