1621729

Information

• Patent Grant
• 1621729

• References
• Source

• Patent Number

  1,621,729

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1927
  98 years ago

• CPC

  • H01H89/02 - Combination of a key operated switch with a manually operated switch

• US Classifications

  • 200 - Electricity: circuit makers and breakers