427653

Information

• Patent Grant
• 427653

• References
• Source

• Patent Number

  427,653

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1890
  134 years ago

• CPC

  • G04B19/087 - with several separate scales
  • G04B33/12 - for extremely long running times

• US Classifications

  • 368 - Horology: time measuring systems or devices