308298

Information

• Patent Grant
• 308298

• References
• Source

• Patent Number

  308,298

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1884
  140 years ago

• CPC

  • E01B7/16 - Jump-over frogs

• US Classifications

  • 246 - Railway switches and signals
  • 104 - Railways