3840831

Information

• Patent Grant
• 3840831

• References
• Source

• Patent Number

  3,840,831

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • H01H51/284 - Polarised relays
  • H01H35/003 - Switches operated by other part of human body than hands
  • H01H36/008 - Change of magnetic field wherein the magnet and switch are fixed

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets