2149472

Information

• Patent Grant
• 2149472

• References
• Source

• Patent Number

  2,149,472

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1939
  85 years ago

• CPC

  • H02P1/025 - Protection against starting if starting resistor is not at zero position

• US Classifications

  • 388 - Electricity: motor control systems