1667402

Information

• Patent Grant
• 1667402

• References
• Source

• Patent Number

  1,667,402

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1928
  96 years ago

• CPC

  • E01H8/12 - specially adapted to grooved rails, flange-ways, or like parts of the permanent way

• US Classifications

  • 037 - Excavating