2640668

Information

• Patent Grant
• 2640668

• References
• Source

• Patent Number

  2,640,668

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1953
  71 years ago

• CPC

  • G04B37/0436 - Clockwork movements coming out without springs, for allowing time reading or winding

• US Classifications

  • 248 - Supports
  • 206 - Special receptacle or package
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology