2220232

Information

• Patent Grant
• 2220232

• References
• Source

• Patent Number

  2,220,232

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  83 years ago

• CPC

  • H01H11/02 - for mercury switches

• US Classifications

  • 200 - Electricity: circuit makers and breakers