3528237

Information

• Patent Grant
• 3528237

• References
• Source

• Patent Number

  3,528,237

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1970
  55 years ago

• CPC

  • G04B17/066 - Manufacture of the spiral spring
  • G04C3/066 - Constructional details

• US Classifications

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