1877168

Information

• Patent Grant
• 1877168

• References
• Source

• Patent Number

  1,877,168

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1932
  92 years ago

• CPC

  • H02H3/405 - using phase sequence analysing arrangements

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 324 - Electricity: measuring and testing