3809976

Information

• Patent Grant
• 3809976

• References
• Source

• Patent Number

  3,809,976

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • H02P6/08 - Arrangements for controlling the speed or torque of a single motor
  • H02P5/51 - Direct ratio control
  • H02P25/024 - controlled by supply frequency

• US Classifications

  • 318 - Electricity: motive power systems