2213294

Information

• Patent Grant
• 2213294

• References
• Source

• Patent Number

  2,213,294

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1940
  84 years ago

• CPC

  • H02H3/307 - involving comparison of quantities derived from a plurality of phases
  • H02H3/286 - involving comparison of similar homopolar quantities

• US Classifications

  • 361 - Electricity: electrical systems and devices