3442222

Information

• Patent Grant
• 3442222

• References
• Source

• Patent Number

  3,442,222

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1969
  55 years ago

• CPC

  • E01B3/40 - Slabs Blocks Pot sleepers Fastening tie-rods to them
  • E01B1/004 - with prefabricated elements embedded in fresh concrete or asphalt
  • E01B29/02 - Transporting, laying, removing, or renewing lengths of assembled track, assembled switches, or assembled crossings

• US Classifications

  • 104 - Railways
  • 238 - Railways: surface track