1452990

Information

• Patent Grant
• 1452990

• References
• Source

• Patent Number

  1,452,990

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1923
  101 years ago

• CPC

  • E01B27/12 - Packing sleepers, with or without concurrent work on the track Compacting track-carrying ballast

• US Classifications

  • 404 - Road structure, process, or apparatus
  • D25 - Building units and construction elements