3423858

Information

• Patent Grant
• 3423858

• References
• Source

• Patent Number

  3,423,858

• Date Filed

  Not available

• Date Issued

  Tuesday, January 28, 1969
  56 years ago

• CPC

  • E01B27/025 - by means of non-driven tools
  • E01B27/107 - along between the tracks only
  • E01B31/17 - by grinding
  • E01B35/00 - Applications of measuring apparatus or devices for track-building purposes
  • E01B2203/16 - Guiding or measuring means

• US Classifications

  • 037 - Excavating
  • 104 - Railways
  • 171 - Unearthing plants or buried objects