2219397

Information

• Patent Grant
• 2219397

• References
• Source

• Patent Number

  2,219,397

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1940
  84 years ago

• CPC

  • H02M1/045 - for multiphase systems

• US Classifications

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