2232257

Information

• Patent Grant
• 2232257

• References
• Source

• Patent Number

  2,232,257

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1941
  83 years ago

• CPC

  • H02P1/34 - by progressive reduction of impedance in secondary circuit
  • Y10T307/852 - Frequency

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 307 - Electrical transmission or interconnection systems
  • 318 - Electricity: motive power systems