3748716

Information

• Patent Grant
• 3748716

• References
• Source

• Patent Number

  3,748,716

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1973
  51 years ago

• CPC

  • B25B27/30 - positioning or withdrawing springs
  • Y10T29/53626 - Flat spiral spring [e.g., watch or clock type]

• US Classifications

  • 029 - Metal working
  • 081 - Tools