3622072

Information

• Patent Grant
• 3622072

• References
• Source

• Patent Number

  3,622,072

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • E04G21/14 - Conveying or assembling building elements
  • E01B1/002 - Ballastless track
  • E01B3/38 - Longitudinal sleepers Longitudinal sleepers integral or combined with tie-rods Combined longitudinal and transverse sleepers Layers of concrete supporting both rails
  • E01B29/005 - Making of concrete parts of the track in situ
  • E01B29/06 - Transporting, laying, removing or renewing sleepers

• US Classifications

  • 238 - Railways: surface track
  • 052 - Static structures
  • 264 - Plastic and nonmetallic article shaping or treating: processes