2425442

Information

• Patent Grant
• 2425442

• References
• Source

• Patent Number

  2,425,442

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1947
  77 years ago

• CPC

  • G05D3/14 - using an analogue comparing device
  • H02P5/49 - by intermittently closing or opening electrical contacts

• US Classifications

  • 318 - Electricity: motive power systems