3876911

Information

• Patent Grant
• 3876911

• References
• Source

• Patent Number

  3,876,911

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1975
  49 years ago

• CPC

  • G01R19/16509 - using electromagnetic relays
  • G01R19/145 - Indicating the presence of current or voltage
  • G01R31/024 - Arrangements for indicating continuity or short-circuits in electric apparatus or lines, leakage or ground faults
  • H01H71/2445 - using a reed switch
  • Y10S174/10 - Bushing with current transformers

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 174 - Electricity: conductors and insulators
  • 324 - Electricity: measuring and testing
  • 340 - Communications: electrical