1992109

Information

• Patent Grant
• 1992109

• References
• Source

• Patent Number

  1,992,109

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1935
  89 years ago

• CPC

  • E21F9/00 - Devices preventing sparking of machines or apparatus
  • B23D49/008 - hand-driven or foot-driven
  • H01H33/92 - the arc-extinguishing fluid being liquid

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices
  • 200 - Electricity: circuit makers and breakers