152502

Information

• Patent Grant
• 152502

• References
• Source

• Patent Number

  152,502

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1874
  150 years ago

• CPC

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

• US Classifications

  • 238 - Railways: surface track