2253188

Information

• Patent Grant
• 2253188

• References
• Source

• Patent Number

  2,253,188

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1941
  83 years ago

• CPC

  • G05F1/652 - using variable impedances in parallel with the load as final control devices

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 318 - Electricity: motive power systems