3900392

Information

• Patent Grant
• 3900392

• References
• Source

• Patent Number

  3,900,392

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1975
  49 years ago

• CPC

  • E01B27/06 - Renewing or cleaning the ballast in situ, wih or without concurrent work on the track

• US Classifications

  • 209 - Classifying, separating, and assorting solids
  • 037 - Excavating
  • 171 - Unearthing plants or buried objects
  • 414 - Material or article handling