1273940

Information

• Patent Grant
• 1273940

• References
• Source

• Patent Number

  1,273,940

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1918
  106 years ago

• CPC

  • H01H53/12 - Ferraris relays

• US Classifications

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