1931308

Information

• Patent Grant
• 1931308

• References
• Source

• Patent Number

  1,931,308

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1933
  91 years ago

• CPC

  • H01H27/08 - wherein the key cannot be removed until the switch is returned to its original position

• US Classifications

  • 200 - Electricity: circuit makers and breakers