1337097

Information

• Patent Grant
• 1337097

• References
• Source

• Patent Number

  1,337,097

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1920
  105 years ago

• CPC

  • G04B1/18 - Constructions for connecting the ends of the mainsprings with the barrel or the arbor
  • Y10T29/53626 - Flat spiral spring [e.g., watch or clock type]

• US Classifications

  • 029 - Metal working
  • 267 - Spring devices
  • 968 - Horology