450637

Information

• Patent Grant
• 450637

• References
• Source

• Patent Number

  450,637

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1891
  133 years ago

• CPC

  • G04B37/06 - Forming the passage for the winding stem through the case Divided winding stems
  • G04B37/0436 - Clockwork movements coming out without springs, for allowing time reading or winding

• US Classifications

  • 368 - Horology: time measuring systems or devices