2287539

Information

• Patent Grant
• 2287539

• References
• Source

• Patent Number

  2,287,539

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1942
  82 years ago

• CPC

  • H01H50/74 - Mechanical means for producing a desired natural frequency of operation of the contacts

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical