2920439

Information

• Patent Grant
• 2920439

• References
• Source

• Patent Number

  2,920,439

• Date Filed

  Not available

• Date Issued

  Tuesday, January 12, 1960
  64 years ago

• CPC

  • G04C3/062 - the balance controlling contacts, the gear-train or several gear-trains being driven electro-magnetically thereby

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology