2690688

Information

• Patent Grant
• 2690688

• References
• Source

• Patent Number

  2,690,688

• Date Filed

  Not available

• Date Issued

  Tuesday, October 5, 1954
  70 years ago

• CPC

  • G04D1/041 - for springs of driving mechanisms

• US Classifications

  • 081 - Tools
  • 968 - Horology