3833172

Information

• Patent Grant
• 3833172

• References
• Source

• Patent Number

  3,833,172

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1974
  50 years ago

• CPC

  • E04G3/34 - characterised by supporting structures provided on the roofs
  • E01B3/22 - Longitudinal sleepers Longitudinal sleepers integral or combined with tie-rods Combined longitudinal and transverse sleepers
  • E01B25/00 - Tracks for special kinds of railways

• US Classifications

  • 238 - Railways: surface track