3821530

Information

• Patent Grant
• 3821530

• References
• Source

• Patent Number

  3,821,530

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • H01H33/68 - Liquid-break switches
  • H01H1/60 - Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
  • H01H1/0015 - Means for testing or for inspecting contacts
  • H01H11/0062 - Testing or measuring non-electrical properties of switches
  • Y10T29/49105 - Switch making

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 029 - Metal working