2531146

Information

• Patent Grant
• 2531146

• References
• Source

• Patent Number

  2,531,146

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1950
  73 years ago

• CPC

  • H02H3/307 - involving comparison of quantities derived from a plurality of phases

• US Classifications

  • 361 - Electricity: electrical systems and devices