3172017

Information

• Patent Grant
• 3172017

• References
• Source

• Patent Number

  3,172,017

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1965
  60 years ago

• CPC

  • H01H47/20 - for producing frequency-selective operation of the relay
  • Y10T307/852 - Frequency

• US Classifications

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