1709706

Information

• Patent Grant
• 1709706

• References
• Source

• Patent Number

  1,709,706

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1929
  95 years ago

• CPC

  • H02P5/50 - by comparing electrical values representing the speeds
  • Y10S388/931 - Electric generator or magnet as auxiliary load

• US Classifications

  • 388 - Electricity: motor control systems
  • 073 - Measuring and testing
  • 318 - Electricity: motive power systems