1885189

Information

• Patent Grant
• 1885189

• References
• Source

• Patent Number

  1,885,189

• Date Filed

  Not available

• Date Issued

  Tuesday, November 1, 1932
  92 years ago

• CPC

  • H02H3/425 - using phase sequence analysing arrangements

• US Classifications

  • 361 - Electricity: electrical systems and devices