3731409

Information

• Patent Grant
• 3731409

• References
• Source

• Patent Number

  3,731,409

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1973
  51 years ago

• CPC

  • E01B27/026 - by means of driven tools
  • E01B27/13 - Packing sleepers, with or without concurrent work on the track

• US Classifications

  • 037 - Excavating
  • 104 - Railways