3643160

Information

• Patent Grant
• 3643160

• References
• Source

• Patent Number

  3,643,160

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1972
  53 years ago

• CPC

  • H02H1/0076 - by superposition on the watched current
  • H02H7/262 - involving transmissions of switching or blocking orders
  • H02J13/0024 - using pulsed signals
  • Y02E60/725 - the elements or equipments being or involving protection elements, arrangements or systems
  • Y02E60/7823 - using pulsed signals
  • Y04S10/20 - the elements or equipments being or involving protection elements, arrangements or systems
  • Y04S40/122 - Using pulsed signals

• US Classifications

  • 375 - Pulse or digital communications
  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices