2777220

Information

• Patent Grant
• 2777220

• References
• Source

• Patent Number

  2,777,220

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1957
  68 years ago

• CPC

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

• US Classifications

  • 037 - Excavating
  • 015 - Brushing, scrubbing, and general cleaning
  • 104 - Railways