2440921

Information

• Patent Grant
• 2440921

• References
• Source

• Patent Number

  2,440,921

• Date Filed

  Not available

• Date Issued

  Tuesday, May 4, 1948
  76 years ago

• CPC

  • E01B27/18 - by introducing additional fresh material under the sleepers
  • E02D3/12 - Consolidating by placing solidifying or pore-filling substances in the soil
  • E01B2203/047 - Adding material
  • E01B2204/03 - Injecting, mixing or spraying additives into or onto ballast or underground

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 111 - Planting
  • 222 - Dispensing
  • 239 - Fluid sprinkling, spraying, and diffusing