2221524

Information

• Patent Grant
• 2221524

• References
• Source

• Patent Number

  2,221,524

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • H02M7/151 - with automatic control
  • H02M1/045 - for multiphase systems

• US Classifications

  • 363 - Electric power conversion systems
  • 315 - Electric lamp and discharge devices: systems