1686666

Information

• Patent Grant
• 1686666

• References
• Source

• Patent Number

  1,686,666

• Date Filed

  Not available

• Date Issued

  Tuesday, October 9, 1928
  96 years ago

• CPC

  • H02P1/34 - by progressive reduction of impedance in secondary circuit
  • Y10S388/934 - Thermal condition
  • Y10T307/484 - Sequential or alternating
  • Y10T307/951 - With time delay or retardation means

• US Classifications

  • 388 - Electricity: motor control systems
  • 307 - Electrical transmission or interconnection systems
  • 318 - Electricity: motive power systems
  • 336 - Inductor devices