2689936

Information

• Patent Grant
• 2689936

• References
• Source

• Patent Number

  2,689,936

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1954
  71 years ago

• CPC

  • H02P9/24 - due to variation of make-to-break ratio of intermittently-operating contacts

• US Classifications

  • 322 - Electricity: single generator systems
  • 218 - High-voltage switches with arc preventing or extinguishing devices
  • 361 - Electricity: electrical systems and devices