1977458

Information

• Patent Grant
• 1977458

• References
• Source

• Patent Number

  1,977,458

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • F16F1/10 - Spiral springs with turns lying substantially in plane surfaces
  • G04B1/14 - Mainsprings Bridles therefor
  • F16F2224/0216 - bimetallic
  • Y10T29/49609 - Spring making

• US Classifications

  • 267 - Spring devices
  • 029 - Metal working
  • 185 - Motors: spring, weight, or animal powered
  • 968 - Horology