2686397

Information

• Patent Grant
• 2686397

• References
• Source

• Patent Number

  2,686,397

• Date Filed

  Not available

• Date Issued

  Tuesday, August 17, 1954
  70 years ago

• CPC

  • G04B31/0123 - with metallic ball bearings and metallic roller bearings

• US Classifications

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