298906

Information

• Patent Grant
• 298906

• References
• Source

• Patent Number

  298,906

• Date Filed

  Not available

• Date Issued

  Tuesday, May 20, 1884
  141 years ago

• CPC

  • G04C13/025 - via special lines

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 340 - Communications: electrical