3503339

Information

• Patent Grant
• 3503339

• References
• Source

• Patent Number

  3,503,339

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1970
  54 years ago

• CPC

  • E01B27/023 - Spreading, levelling or redistributing ballast already placed

• US Classifications

  • 105 - Railway rolling stock
  • 037 - Excavating
  • 104 - Railways
  • 172 - Earth working