446737

Information

• Patent Grant
• 446737

• References
• Source

• Patent Number

  446,737

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1891
  134 years ago

• CPC

  • G04B37/0016 - with folding cover or folding bottom (hinge without spring)
  • G04B37/0436 - Clockwork movements coming out without springs, for allowing time reading or winding

• US Classifications

  • 368 - Horology: time measuring systems or devices