3685589

Information

• Patent Grant
• 3685589

• References
• Source

• Patent Number

  3,685,589

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1972
  52 years ago

• CPC

  • E01B27/105 - the track having been lifted
  • E01B2203/015 - present but lifted
  • E01B2203/022 - Horizontal chain
  • E01B2203/045 - the ballast having been taken up
  • E01B2203/065 - Re-use of ballast
  • E01B2203/10 - Track-lifting or-lining devices or methods
  • E01B2203/127 - vibrating the track surface

• US Classifications

  • 171 - Unearthing plants or buried objects