820464

Information

• Patent Grant
• 820464

• References
• Source

• Patent Number

  820,464

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1906
  118 years ago

• CPC

  • B65H23/198 - motor-controlled (Controlling electrical drive motors therefor)
  • Y10S388/927 - Which varies resistance of motor circuit

• US Classifications

  • 318 - Electricity: motive power systems
  • 104 - Railways
  • 198 - Conveyors: power-driven
  • 388 - Electricity: motor control systems
  • 414 - Material or article handling