1667747

Information

• Patent Grant
• 1667747

• References
• Source

• Patent Number

  1,667,747

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1928
  96 years ago

• CPC

  • H01H50/72 - for mercury contact

• US Classifications

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