3321589

Information

• Patent Grant
• 3321589

• References
• Source

• Patent Number

  3,321,589

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1967
  57 years ago

• CPC

  • H01H27/08 - wherein the key cannot be removed until the switch is returned to its original position
  • H01H9/281 - making use of a padlock

• US Classifications

  • 200 - Electricity: circuit makers and breakers