2420833

Information

• Patent Grant
• 2420833

• References
• Source

• Patent Number

  2,420,833

• Date Filed

  Not available

• Date Issued

  Tuesday, May 20, 1947
  77 years ago

• CPC

  • E01B1/001 - Track with ballast
  • E01B1/008 - Drainage of track
  • E01B2204/01 - Elastic layers other than rail-pads
  • E01B2204/07 - Drainage

• US Classifications

  • 238 - Railways: surface track
  • 404 - Road structure, process, or apparatus