3521569

Information

• Patent Grant
• 3521569

• References
• Source

• Patent Number

  3,521,569

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1970
  54 years ago

• CPC

  • B61D3/184 - the heavy vehicles being of the trailer or semi-trailer type
  • B61F3/10 - with three or more axles

• US Classifications

  • 105 - Railway rolling stock