422090

Information

• Patent Grant
• 422090

• References
• Source

• Patent Number

  422,090

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1890
  135 years ago

• CPC

  • G04B19/2532 - automatically corrected at the end of mounths having less than 31 days

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 040 - Card, picture, or sign exhibiting