2020475

Information

• Patent Grant
• 2020475

• References
• Source

• Patent Number

  2,020,475

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1935
  88 years ago

• CPC

  • H01H33/96 - the arc-extinguishing fluid being liquid

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices