3427990

Information

• Patent Grant
• 3427990

• References
• Source

• Patent Number

  3,427,990

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1969
  55 years ago

• CPC

  • E01B27/16 - Sleeper-tamping machines
  • E01B27/025 - by means of non-driven tools
  • E01B27/027 - Loosening ballasting material
  • E01B27/04 - Removing the ballast Machines therefor, whether or not additionally adapted for taking-up ballast
  • E01B29/14 - for lifting sleepers up to the rails

• US Classifications

  • 104 - Railways
  • 037 - Excavating