1214663

Information

• Patent Grant
• 1214663

• References
• Source

• Patent Number

  1,214,663

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1917
  108 years ago

• CPC

  • H02M3/33507 - with automatic control of the output voltage or current
  • G05F1/648 - being plural resistors among which a selection is made
  • Y10S388/905 - Armature and field windings connected in series

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 388 - Electricity: motor control systems