420519

Information

• Patent Grant
• 420519

• References
• Source

• Patent Number

  420,519

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1890
  135 years ago

• CPC

  • G04B19/205 - by means of sheets
  • G04B19/24386 - sheet-shaped

• US Classifications

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