177603

Information

• Patent Grant
• 177603

• References
• Source

• Patent Number

  177,603

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1876
  148 years ago

• CPC

  • H01C10/16 - including plural resistive elements
  • B60M1/135 - composite

• US Classifications

  • 238 - Railways: surface track
  • 246 - Railway switches and signals